diff --git a/Cargo.lock b/Cargo.lock
index b60d048410a6f..07df6b036aa15 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -12137,7 +12137,7 @@ checksum = "05ae329d1f08c4d17a59bed7ff5b5a769d062e64a62d34a3261b219e62cd5aae"
 dependencies = [
  "serde",
  "serde_spanned",
- "toml_datetime",
+ "toml_datetime 0.6.11",
  "toml_edit 0.22.26",
 ]
 
@@ -12150,6 +12150,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "toml_datetime"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2cdb639ebbc97961c51720f858597f7f24c4fc295327923af55b74c3c724533"
+dependencies = [
+ "serde_core",
+]
+
 [[package]]
 name = "toml_edit"
 version = "0.19.14"
@@ -12157,7 +12166,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8123f27e969974a3dfba720fdb560be359f57b44302d280ba72e76a74480e8a"
 dependencies = [
  "indexmap 2.11.4",
- "toml_datetime",
+ "toml_datetime 0.6.11",
  "winnow 0.5.4",
 ]
 
@@ -12170,7 +12179,7 @@ dependencies = [
  "indexmap 2.11.4",
  "serde",
  "serde_spanned",
- "toml_datetime",
+ "toml_datetime 0.6.11",
  "toml_write",
  "winnow 0.7.13",
 ]
@@ -13465,7 +13474,7 @@ dependencies = [
  "tokio-postgres",
  "tokio-stream",
  "tokio-util",
- "toml_datetime",
+ "toml_datetime 0.7.3",
  "toml_edit 0.22.26",
  "tonic",
  "tower 0.5.2",
diff --git a/src/workspace-hack/Cargo.toml b/src/workspace-hack/Cargo.toml
index 603d8c5bd2f41..1fb5fefcdb14a 100644
--- a/src/workspace-hack/Cargo.toml
+++ b/src/workspace-hack/Cargo.toml
@@ -141,7 +141,7 @@ tokio = { version = "1.47.1", features = ["full", "test-util", "tracing"] }
 tokio-postgres = { git = "https://github.com/MaterializeInc/rust-postgres", features = ["serde", "with-chrono-0_4", "with-serde_json-1", "with-uuid-1"] }
 tokio-stream = { version = "0.1.17", features = ["net", "sync"] }
 tokio-util = { version = "0.7.17", features = ["codec", "compat", "io", "time"] }
-toml_datetime = { version = "0.6.11", default-features = false, features = ["serde"] }
+toml_datetime = { version = "0.7.3", default-features = false, features = ["serde"] }
 toml_edit = { version = "0.22.26", features = ["serde"] }
 tonic = { version = "0.12.3", features = ["gzip"] }
 tower = { version = "0.5.2", default-features = false, features = ["balance", "buffer", "filter", "limit", "load-shed", "log", "retry", "timeout"] }
@@ -291,7 +291,7 @@ tokio = { version = "1.47.1", features = ["full", "test-util", "tracing"] }
 tokio-postgres = { git = "https://github.com/MaterializeInc/rust-postgres", features = ["serde", "with-chrono-0_4", "with-serde_json-1", "with-uuid-1"] }
 tokio-stream = { version = "0.1.17", features = ["net", "sync"] }
 tokio-util = { version = "0.7.17", features = ["codec", "compat", "io", "time"] }
-toml_datetime = { version = "0.6.11", default-features = false, features = ["serde"] }
+toml_datetime = { version = "0.7.3", default-features = false, features = ["serde"] }
 toml_edit = { version = "0.22.26", features = ["serde"] }
 tonic = { version = "0.12.3", features = ["gzip"] }
 tower = { version = "0.5.2", default-features = false, features = ["balance", "buffer", "filter", "limit", "load-shed", "log", "retry", "timeout"] }