diff --git a/opentelemetry-datadog/README.md b/opentelemetry-datadog/README.md
index 52670454d2..67be663d5a 100644
--- a/opentelemetry-datadog/README.md
+++ b/opentelemetry-datadog/README.md
@@ -37,7 +37,7 @@ to [`Datadog`].
  [Example]((https://docs.rs/opentelemetry-datadog/latest/opentelemetry_datadog/#kitchen-sink-full-configuration)) showing how to override all configuration options. See the
  [`DatadogPipelineBuilder`] docs for details of each option.
 
- [`DatadogPipelineBuilder`]: struct.DatadogPipelineBuilder.html
+ [`DatadogPipelineBuilder`]: https://docs.rs/opentelemetry-datadog/latest/opentelemetry_datadog/struct.DatadogPipelineBuilder.html
 
 [`Datadog`]: https://www.datadoghq.com/
 [`OpenTelemetry`]: https://crates.io/crates/opentelemetry
diff --git a/opentelemetry-proto/src/proto/grpcio/common.rs b/opentelemetry-proto/src/proto/grpcio/common.rs
index c2a257d0bd..bf69e3c346 100644
--- a/opentelemetry-proto/src/proto/grpcio/common.rs
+++ b/opentelemetry-proto/src/proto/grpcio/common.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry-proto/src/proto/grpcio/metrics.rs b/opentelemetry-proto/src/proto/grpcio/metrics.rs
index 8505563e3b..1894a5382d 100644
--- a/opentelemetry-proto/src/proto/grpcio/metrics.rs
+++ b/opentelemetry-proto/src/proto/grpcio/metrics.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry-proto/src/proto/grpcio/metrics_service.rs b/opentelemetry-proto/src/proto/grpcio/metrics_service.rs
index 2055807e50..5941242157 100644
--- a/opentelemetry-proto/src/proto/grpcio/metrics_service.rs
+++ b/opentelemetry-proto/src/proto/grpcio/metrics_service.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry-proto/src/proto/grpcio/resource.rs b/opentelemetry-proto/src/proto/grpcio/resource.rs
index d09faadf5d..922ac4f47e 100644
--- a/opentelemetry-proto/src/proto/grpcio/resource.rs
+++ b/opentelemetry-proto/src/proto/grpcio/resource.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry-proto/src/proto/grpcio/trace.rs b/opentelemetry-proto/src/proto/grpcio/trace.rs
index 4c25cadc90..5c5368395a 100644
--- a/opentelemetry-proto/src/proto/grpcio/trace.rs
+++ b/opentelemetry-proto/src/proto/grpcio/trace.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry-proto/src/proto/grpcio/trace_config.rs b/opentelemetry-proto/src/proto/grpcio/trace_config.rs
index 34456cd2c4..3c213db4b1 100644
--- a/opentelemetry-proto/src/proto/grpcio/trace_config.rs
+++ b/opentelemetry-proto/src/proto/grpcio/trace_config.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry-proto/src/proto/grpcio/trace_service.rs b/opentelemetry-proto/src/proto/grpcio/trace_service.rs
index 357c8cc56f..016c02d56c 100644
--- a/opentelemetry-proto/src/proto/grpcio/trace_service.rs
+++ b/opentelemetry-proto/src/proto/grpcio/trace_service.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry-proto/src/proto/grpcio/tracez.rs b/opentelemetry-proto/src/proto/grpcio/tracez.rs
index b915518e6f..bfc1baaa36 100644
--- a/opentelemetry-proto/src/proto/grpcio/tracez.rs
+++ b/opentelemetry-proto/src/proto/grpcio/tracez.rs
@@ -1,4 +1,4 @@
-// This file is generated by rust-protobuf 2.26.1. Do not edit
+// This file is generated by rust-protobuf 2.27.1. Do not edit
 // @generated
 
 // https://github.com/rust-lang/rust-clippy/issues/702
@@ -21,7 +21,7 @@
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_26_1;
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_27_1;
 
 #[derive(PartialEq,Clone,Default)]
 #[cfg_attr(feature = "with-serde", derive(::serde::Serialize, ::serde::Deserialize))]
diff --git a/opentelemetry/src/trace/tracer.rs b/opentelemetry/src/trace/tracer.rs
index 15ecdb90c1..27ea5cb64f 100644
--- a/opentelemetry/src/trace/tracer.rs
+++ b/opentelemetry/src/trace/tracer.rs
@@ -256,9 +256,10 @@ pub trait Tracer {
     ///     })
     /// }
     /// ```
-    fn in_span<T, F>(&self, name: &'static str, f: F) -> T
+    fn in_span<T, F, N>(&self, name: N, f: F) -> T
     where
         F: FnOnce(Context) -> T,
+        N: Into<Cow<'static, str>>,
         Self::Span: Send + Sync + 'static,
     {
         let span = self.start(name);