diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index a672bb28dd..7ec7579c09 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -121,7 +121,7 @@ jobs:
       shell: bash
 
   check-msrv:
-    # Run `cargo check` on our minimum supported Rust version (1.56.0). This
+    # Run `cargo check` on our minimum supported Rust version (1.63.0). This
     # checks with minimal versions; maximal versions are checked above.
     name: "cargo check (+MSRV -Zminimal-versions)"
     needs: check
@@ -143,7 +143,7 @@ jobs:
         - tracing-tower
         - tracing
         toolchain:
-        - 1.56.0
+        - 1.63.0
         - stable
     steps:
     - uses: actions/checkout@v3
@@ -279,9 +279,6 @@ jobs:
 
   test-features-stable:
     # Feature flag tests that run on stable Rust.
-    # TODO(david): once tracing's MSRV goes up to Rust 1.51, we should be able to switch to
-    # using cargo's V2 feature resolver (https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions)
-    # and avoid cd'ing into each crate's directory.
     name: cargo test (feature-specific)
     needs: check
     runs-on: ubuntu-latest
@@ -290,24 +287,18 @@ jobs:
     - uses: dtolnay/rust-toolchain@stable
     - name: "Test log support"
       run: cargo test
-      working-directory: "tracing/test-log-support"
     - name: "Test static max level"
       run: cargo test
-      working-directory: "tracing/test_static_max_level_features"
     - name: "Test static max level (release)"
       run: cargo test --release
-      working-directory: "tracing/test_static_max_level_features"
     - name: "Test tracing-core no-std support"
       run: cargo test --no-default-features
-      working-directory: tracing
     - name: "Test tracing no-std support"
       run: cargo test --no-default-features
-      working-directory: tracing
       # this skips running doctests under the `--no-default-features` flag,
       # as rustdoc isn't aware of cargo's feature flags.
     - name: "Test tracing-subscriber with all features disabled"
       run: cargo test --lib --tests --no-default-features
-      working-directory: tracing-subscriber
 
   # all required checks except for the main test run (which we only require
   # specific matrix combinations from)
diff --git a/Cargo.toml b/Cargo.toml
index d272eef50a..65bb8fd092 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [workspace]
-
+resolver = "2"
 members = [
     "tracing",
     "tracing-core",
diff --git a/README.md b/README.md
index a31a7dbe54..62c2baf646 100644
--- a/README.md
+++ b/README.md
@@ -254,7 +254,7 @@ attachment that `Future::instrument` does.
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index e8878eae15..f10a324c79 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -3,7 +3,7 @@ name = "tracing-examples"
 version = "0.0.0"
 publish = false
 edition = "2018"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = []
diff --git a/tracing-attributes/Cargo.toml b/tracing-attributes/Cargo.toml
index 57dd7415b3..aa625ee37c 100644
--- a/tracing-attributes/Cargo.toml
+++ b/tracing-attributes/Cargo.toml
@@ -28,7 +28,7 @@ keywords = ["logging", "tracing", "macro", "instrument", "log"]
 license = "MIT"
 readme = "README.md"
 edition = "2018"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [lib]
 proc-macro = true
diff --git a/tracing-attributes/README.md b/tracing-attributes/README.md
index 976aafe305..0e9ad0f6ad 100644
--- a/tracing-attributes/README.md
+++ b/tracing-attributes/README.md
@@ -37,7 +37,7 @@ structured, event-based diagnostic information. This crate provides the
 
 Note that this macro is also re-exported by the main `tracing` crate.
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -69,7 +69,7 @@ pub fn my_function(my_arg: usize) {
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-attributes/src/attr.rs b/tracing-attributes/src/attr.rs
index a1854c7e80..902ca1450b 100644
--- a/tracing-attributes/src/attr.rs
+++ b/tracing-attributes/src/attr.rs
@@ -255,19 +255,14 @@ impl Parse for Skips {
     }
 }
 
-#[derive(Clone, Debug, Hash, PartialEq, Eq)]
+#[derive(Clone, Debug, Hash, PartialEq, Eq, Default)]
 pub(crate) enum FormatMode {
+    #[default]
     Default,
     Display,
     Debug,
 }
 
-impl Default for FormatMode {
-    fn default() -> Self {
-        FormatMode::Default
-    }
-}
-
 #[derive(Clone, Debug)]
 pub(crate) struct Fields(pub(crate) Punctuated<Field, Token![,]>);
 
diff --git a/tracing-attributes/src/lib.rs b/tracing-attributes/src/lib.rs
index ca3fe77d14..857e0798b6 100644
--- a/tracing-attributes/src/lib.rs
+++ b/tracing-attributes/src/lib.rs
@@ -6,7 +6,7 @@
 //!
 //! Note that this macro is also re-exported by the main `tracing` crate.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -41,7 +41,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-core/Cargo.toml b/tracing-core/Cargo.toml
index 363d8fad53..c56b59f262 100644
--- a/tracing-core/Cargo.toml
+++ b/tracing-core/Cargo.toml
@@ -24,7 +24,7 @@ categories = [
 ]
 keywords = ["logging", "tracing", "profiling"]
 edition = "2018"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = ["std"]
diff --git a/tracing-core/README.md b/tracing-core/README.md
index 24f0fb1783..14e714ca83 100644
--- a/tracing-core/README.md
+++ b/tracing-core/README.md
@@ -53,7 +53,7 @@ The crate provides:
 In addition, it defines the global callsite registry and per-thread current
 dispatcher which other components of the tracing system rely on.
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -99,7 +99,7 @@ The following crate feature flags are available:
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-core/src/lib.rs b/tracing-core/src/lib.rs
index d01b4a0c7a..7aafb01151 100644
--- a/tracing-core/src/lib.rs
+++ b/tracing-core/src/lib.rs
@@ -23,7 +23,7 @@
 //! In addition, it defines the global callsite registry and per-thread current
 //! dispatcher which other components of the tracing system rely on.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -109,7 +109,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-error/Cargo.toml b/tracing-error/Cargo.toml
index 7db6fb8837..10312ac292 100644
--- a/tracing-error/Cargo.toml
+++ b/tracing-error/Cargo.toml
@@ -32,7 +32,7 @@ keywords = [
     "backtrace"
 ]
 edition = "2018"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = ["traced-error"]
diff --git a/tracing-error/README.md b/tracing-error/README.md
index ae2721233f..c1d0e530a9 100644
--- a/tracing-error/README.md
+++ b/tracing-error/README.md
@@ -48,7 +48,7 @@ The crate provides the following:
 
 **Note**: This crate is currently experimental.
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -186,7 +186,7 @@ fn main() {
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-error/src/lib.rs b/tracing-error/src/lib.rs
index c6dba25fe3..19f1d6e65e 100644
--- a/tracing-error/src/lib.rs
+++ b/tracing-error/src/lib.rs
@@ -18,7 +18,7 @@
 //!
 //! **Note**: This crate is currently experimental.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -166,7 +166,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-flame/Cargo.toml b/tracing-flame/Cargo.toml
index 2ea6d0b807..597aefe668 100644
--- a/tracing-flame/Cargo.toml
+++ b/tracing-flame/Cargo.toml
@@ -19,7 +19,7 @@ categories = [
     "asynchronous",
 ]
 keywords = ["tracing", "subscriber", "flamegraph", "profiling"]
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = ["smallvec"]
diff --git a/tracing-flame/README.md b/tracing-flame/README.md
index 5a6b9017af..8e47bc09d8 100644
--- a/tracing-flame/README.md
+++ b/tracing-flame/README.md
@@ -26,7 +26,7 @@ flamegraph/flamechart. Flamegraphs/flamecharts are useful for identifying perfor
 bottlenecks in an application. For more details, see Brendan Gregg's [post]
 on flamegraphs.
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 [post]: http://www.brendangregg.com/flamegraphs.html
@@ -106,7 +106,7 @@ _flamechart_, which _does not_ sort or collapse identical stack frames.
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-flame/src/lib.rs b/tracing-flame/src/lib.rs
index 8c37486533..36d2f9c844 100644
--- a/tracing-flame/src/lib.rs
+++ b/tracing-flame/src/lib.rs
@@ -10,7 +10,7 @@
 //! issues bottlenecks in an application. For more details, see Brendan Gregg's [post]
 //! on flamegraphs.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //! [post]: http://www.brendangregg.com/flamegraphs.html
@@ -95,7 +95,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-futures/Cargo.toml b/tracing-futures/Cargo.toml
index f3b4dc1d61..9d77ac3366 100644
--- a/tracing-futures/Cargo.toml
+++ b/tracing-futures/Cargo.toml
@@ -16,7 +16,7 @@ categories = [
 ]
 keywords = ["logging", "profiling", "tracing", "futures", "async"]
 license = "MIT"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = ["std-future", "std"]
diff --git a/tracing-futures/README.md b/tracing-futures/README.md
index a7d3331a76..d16046358f 100644
--- a/tracing-futures/README.md
+++ b/tracing-futures/README.md
@@ -51,14 +51,14 @@ The crate provides the following traits:
 [`Subscriber`]: https://docs.rs/tracing/latest/tracing/subscriber/index.html
 [`tracing`]: https://crates.io/crates/tracing
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-futures/src/lib.rs b/tracing-futures/src/lib.rs
index 262d15fc87..0b1c810c60 100644
--- a/tracing-futures/src/lib.rs
+++ b/tracing-futures/src/lib.rs
@@ -15,7 +15,7 @@
 //! * [`WithCollector`] allows a `tracing` [collector] to be attached to a
 //!   future, sink, stream, or executor.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -60,7 +60,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-journald/Cargo.toml b/tracing-journald/Cargo.toml
index a2c0755283..ef22014c3d 100644
--- a/tracing-journald/Cargo.toml
+++ b/tracing-journald/Cargo.toml
@@ -13,7 +13,7 @@ categories = [
     "development-tools::profiling",
 ]
 keywords = ["tracing", "journald"]
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [dependencies]
 libc = "0.2.126"
diff --git a/tracing-journald/README.md b/tracing-journald/README.md
index 6e6ec5942a..b7176b432d 100644
--- a/tracing-journald/README.md
+++ b/tracing-journald/README.md
@@ -28,7 +28,7 @@ scoped, structured, and async-aware diagnostics. `tracing-journald` provides a
 and events to [`systemd-journald`][journald], on Linux distributions that use
 `systemd`.
  
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 [`tracing`]: https://crates.io/crates/tracing
@@ -38,7 +38,7 @@ and events to [`systemd-journald`][journald], on Linux distributions that use
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-journald/src/lib.rs b/tracing-journald/src/lib.rs
index 34ed915bbb..02b12c3e82 100644
--- a/tracing-journald/src/lib.rs
+++ b/tracing-journald/src/lib.rs
@@ -11,7 +11,7 @@
 //! and events to [`systemd-journald`][journald], on Linux distributions that
 //! use `systemd`.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //! [`tracing`]: https://crates.io/crates/tracing
@@ -21,7 +21,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-log/Cargo.toml b/tracing-log/Cargo.toml
index 61e68b376c..8e51f2561c 100644
--- a/tracing-log/Cargo.toml
+++ b/tracing-log/Cargo.toml
@@ -15,7 +15,7 @@ categories = [
 keywords = ["logging", "tracing", "log"]
 license = "MIT"
 readme = "README.md"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = ["log-tracer", "std"]
diff --git a/tracing-log/README.md b/tracing-log/README.md
index 3da5f6b7e1..8ccad1c506 100644
--- a/tracing-log/README.md
+++ b/tracing-log/README.md
@@ -56,14 +56,14 @@ This crate provides:
 [`tracing::Subscriber`]: https://docs.rs/tracing/latest/tracing/trait.Subscriber.html
 [`tracing::Event`]: https://docs.rs/tracing/latest/tracing/struct.Event.html
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-log/src/lib.rs b/tracing-log/src/lib.rs
index a822051baf..aff6d42fe1 100644
--- a/tracing-log/src/lib.rs
+++ b/tracing-log/src/lib.rs
@@ -16,7 +16,7 @@
 //! - An [`env_logger`] module, with helpers for using the [`env_logger` crate]
 //!   with `tracing` (optional, enabled by the `env-logger` feature).
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -76,7 +76,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-macros/Cargo.toml b/tracing-macros/Cargo.toml
index b457067e26..3efd4e4374 100644
--- a/tracing-macros/Cargo.toml
+++ b/tracing-macros/Cargo.toml
@@ -15,7 +15,7 @@ categories = [
 ]
 keywords = ["logging", "tracing"]
 license = "MIT"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [dependencies]
 tracing = { path = "../tracing", version = "0.2", default-features = false, features = ["std"] }
diff --git a/tracing-mock/Cargo.toml b/tracing-mock/Cargo.toml
index e041338b0a..6cec7406be 100644
--- a/tracing-mock/Cargo.toml
+++ b/tracing-mock/Cargo.toml
@@ -14,7 +14,7 @@ readme = "README.md"
 repository = "https://github.com/tokio-rs/tracing"
 homepage = "https://tokio.rs"
 edition = "2018"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 publish = false
 
 [dependencies]
diff --git a/tracing-mock/README.md b/tracing-mock/README.md
index e561606119..0682687f97 100644
--- a/tracing-mock/README.md
+++ b/tracing-mock/README.md
@@ -29,7 +29,7 @@ structured, event-based diagnostic information. `tracing-mock` provides
 tools for making assertions about what `tracing` diagnostics are emitted
 by code under test.
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -154,7 +154,7 @@ handle.assert_finished();
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-serde/Cargo.toml b/tracing-serde/Cargo.toml
index 7b027fc5ac..8fb16eeac1 100644
--- a/tracing-serde/Cargo.toml
+++ b/tracing-serde/Cargo.toml
@@ -16,7 +16,7 @@ categories = [
     "encoding",
 ]
 keywords = ["logging", "tracing", "serialization"]
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = ["std"]
diff --git a/tracing-serde/README.md b/tracing-serde/README.md
index b52b9ae88a..7b24517b75 100644
--- a/tracing-serde/README.md
+++ b/tracing-serde/README.md
@@ -36,7 +36,7 @@ and tracing data to monitor your services in production.
 The `tracing` crate provides the APIs necessary for instrumenting
 libraries and applications to emit trace data.
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -113,7 +113,7 @@ The following crate feature flags are available:
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-serde/src/lib.rs b/tracing-serde/src/lib.rs
index 640c8d7886..67535b8514 100644
--- a/tracing-serde/src/lib.rs
+++ b/tracing-serde/src/lib.rs
@@ -32,7 +32,7 @@
 //! The `tracing` crate provides the APIs necessary for instrumenting
 //! libraries and applications to emit trace data.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -128,7 +128,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-subscriber/Cargo.toml b/tracing-subscriber/Cargo.toml
index b73272ba1e..524bf4b482 100644
--- a/tracing-subscriber/Cargo.toml
+++ b/tracing-subscriber/Cargo.toml
@@ -20,7 +20,7 @@ categories = [
     "asynchronous",
 ]
 keywords = ["logging", "tracing", "metrics", "subscriber"]
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 
diff --git a/tracing-subscriber/README.md b/tracing-subscriber/README.md
index f1b7a03f2f..cc5426d04d 100644
--- a/tracing-subscriber/README.md
+++ b/tracing-subscriber/README.md
@@ -32,14 +32,14 @@ Utilities for implementing and composing [`tracing`][tracing] subscribers.
 [discord-url]: https://discord.gg/EeF3cQw
 [maint-badge]: https://img.shields.io/badge/maintenance-experimental-blue.svg
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-subscriber/src/fmt/mod.rs b/tracing-subscriber/src/fmt/mod.rs
index 036099211b..49e23e6007 100644
--- a/tracing-subscriber/src/fmt/mod.rs
+++ b/tracing-subscriber/src/fmt/mod.rs
@@ -16,7 +16,7 @@
 //! tracing-subscriber = "0.3"
 //! ```
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: ../index.html#supported-rust-versions
 //!
diff --git a/tracing-subscriber/src/lib.rs b/tracing-subscriber/src/lib.rs
index 90757df699..c64a40eedf 100644
--- a/tracing-subscriber/src/lib.rs
+++ b/tracing-subscriber/src/lib.rs
@@ -10,7 +10,7 @@
 //! `tracing-subscriber` is intended for use by both `Collector` authors and
 //! application authors using `tracing` to instrument their applications.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -106,7 +106,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing-tower/Cargo.toml b/tracing-tower/Cargo.toml
index 970886ae84..9153e9bdb7 100644
--- a/tracing-tower/Cargo.toml
+++ b/tracing-tower/Cargo.toml
@@ -15,7 +15,7 @@ categories = [
 ]
 keywords = ["logging", "tracing"]
 license = "MIT"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [features]
 default = ["tower-layer", "tower-make"]
diff --git a/tracing/Cargo.toml b/tracing/Cargo.toml
index 2d7bf1120e..f01783c293 100644
--- a/tracing/Cargo.toml
+++ b/tracing/Cargo.toml
@@ -28,7 +28,7 @@ categories = [
 ]
 keywords = ["logging", "tracing", "metrics", "async"]
 edition = "2018"
-rust-version = "1.56.0"
+rust-version = "1.63.0"
 
 [dependencies]
 tracing-core = { path = "../tracing-core", version = "0.2", default-features = false }
@@ -43,7 +43,7 @@ log = "0.4.17"
 tracing-mock = { path = "../tracing-mock" }
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-wasm-bindgen-test = "0.3.31"
+wasm-bindgen-test = "0.3.38"
 
 [features]
 default = ["std", "attributes"]
diff --git a/tracing/README.md b/tracing/README.md
index ff34b135d2..f5852b818d 100644
--- a/tracing/README.md
+++ b/tracing/README.md
@@ -47,7 +47,7 @@ data as well as textual messages.
 The `tracing` crate provides the APIs necessary for instrumenting libraries
 and applications to emit trace data.
 
-*Compiler support: [requires `rustc` 1.56+][msrv]*
+*Compiler support: [requires `rustc` 1.63+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -427,7 +427,7 @@ undergoing active development. They may be less stable than `tracing` and
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.56. The current Tracing version is not guaranteed to build on Rust
+version is 1.63. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing/src/lib.rs b/tracing/src/lib.rs
index 34aabca314..a2fcc25a31 100644
--- a/tracing/src/lib.rs
+++ b/tracing/src/lib.rs
@@ -19,7 +19,7 @@
 //! The `tracing` crate provides the APIs necessary for instrumenting libraries
 //! and applications to emit trace data.
 //!
-//! *Compiler support: [requires `rustc` 1.56+][msrv]*
+//! *Compiler support: [requires `rustc` 1.63+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //! # Core Concepts
@@ -892,7 +892,7 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.56. The current Tracing version is not guaranteed to build on
+//! version is 1.63. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
diff --git a/tracing/tests/macros.rs b/tracing/tests/macros.rs
index 81b929d1d3..b6e568f4a6 100644
--- a/tracing/tests/macros.rs
+++ b/tracing/tests/macros.rs
@@ -5,10 +5,6 @@ extern crate tracing;
 #[cfg(target_arch = "wasm32")]
 extern crate wasm_bindgen_test;
 
-// TODO: remove this once https://github.com/tokio-rs/tracing/pull/2675#issuecomment-1667628907 is resolved
-#[cfg(target_arch = "wasm32")]
-use ::core::option::Option::None;
-
 use tracing::{
     callsite, debug, debug_span, enabled, error, error_span, event, event_enabled, info, info_span,
     span, span_enabled, trace, trace_span, warn, warn_span, Level,