diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 88d49b7ec5..354afc089d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -93,7 +93,7 @@ jobs:
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal
-        toolchain: 1.64.0
+        toolchain: 1.65.0
         override: true
     - name: Patch dependencies versions # some dependencies bump MSRV without major version bump
       run: ./scripts/patch_dependencies.sh
diff --git a/README.md b/README.md
index b279015607..9068a7064f 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ analysis in order to understand your software's performance and behavior. You
 can export and analyze them using [Prometheus], [Jaeger], and other
 observability tools.
 
-*Compiler support: [requires `rustc` 1.64+][msrv]*
+*Compiler support: [requires `rustc` 1.65+][msrv]*
 
 [Prometheus]: https://prometheus.io
 [Jaeger]: https://www.jaegertracing.io
diff --git a/opentelemetry-appender-log/CHANGELOG.md b/opentelemetry-appender-log/CHANGELOG.md
index ff81cb8068..27b551c1e0 100644
--- a/opentelemetry-appender-log/CHANGELOG.md
+++ b/opentelemetry-appender-log/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## vNext
 
+### Changed
+
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
+
 ### Fixed
 
 - Add log appender versions to loggers (#1182).
diff --git a/opentelemetry-appender-tracing/CHANGELOG.md b/opentelemetry-appender-tracing/CHANGELOG.md
index 0357916bc3..33218c30ca 100644
--- a/opentelemetry-appender-tracing/CHANGELOG.md
+++ b/opentelemetry-appender-tracing/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 ## vNext
 
+### Changed
+
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
+
+### Added
+
 - Add log appender versions to loggers (#1182)
 
 ## v0.1.0
diff --git a/opentelemetry-aws/CHANGELOG.md b/opentelemetry-aws/CHANGELOG.md
index 3413895e0f..c7f866e5fb 100644
--- a/opentelemetry-aws/CHANGELOG.md
+++ b/opentelemetry-aws/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ## v0.8.0
diff --git a/opentelemetry-contrib/CHANGELOG.md b/opentelemetry-contrib/CHANGELOG.md
index 99afe6c908..9802ccc1dd 100644
--- a/opentelemetry-contrib/CHANGELOG.md
+++ b/opentelemetry-contrib/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ## v0.12.0
diff --git a/opentelemetry-datadog/CHANGELOG.md b/opentelemetry-datadog/CHANGELOG.md
index cad9e4945b..bb98caf3e8 100644
--- a/opentelemetry-datadog/CHANGELOG.md
+++ b/opentelemetry-datadog/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ### Fixed
@@ -22,7 +23,7 @@
 - Fix the array encoding length of datadog version 05 exporter #1002
 
 ## v0.7.0
-  
+
 ### Added
 - [Breaking] Add support for unified tagging [#931](https://github.com/open-telemetry/opentelemetry-rust/pull/931).
 
diff --git a/opentelemetry-dynatrace/CHANGELOG.md b/opentelemetry-dynatrace/CHANGELOG.md
index 12f2ce3977..c75ed3211e 100644
--- a/opentelemetry-dynatrace/CHANGELOG.md
+++ b/opentelemetry-dynatrace/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Add deprecation note to Dynatrace exporter
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
diff --git a/opentelemetry-http/CHANGELOG.md b/opentelemetry-http/CHANGELOG.md
index 11b9f4cbf9..042a74d019 100644
--- a/opentelemetry-http/CHANGELOG.md
+++ b/opentelemetry-http/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ## v0.9.0
diff --git a/opentelemetry-jaeger/CHANGELOG.md b/opentelemetry-jaeger/CHANGELOG.md
index 62641a17a0..acf49a24cb 100644
--- a/opentelemetry-jaeger/CHANGELOG.md
+++ b/opentelemetry-jaeger/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ## v0.19.0
diff --git a/opentelemetry-otlp/CHANGELOG.md b/opentelemetry-otlp/CHANGELOG.md
index ff57ed6b3e..555b5764d9 100644
--- a/opentelemetry-otlp/CHANGELOG.md
+++ b/opentelemetry-otlp/CHANGELOG.md
@@ -10,6 +10,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 - Changed dependency from `opentelemetry_api` to `opentelemetry` as the latter
   is now the API crate. [#1226](https://github.com/open-telemetry/opentelemetry-rust/pull/1226)
diff --git a/opentelemetry-prometheus/CHANGELOG.md b/opentelemetry-prometheus/CHANGELOG.md
index c0f720138d..667d1c6644 100644
--- a/opentelemetry-prometheus/CHANGELOG.md
+++ b/opentelemetry-prometheus/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - allow custom units in prometheus suffix [#1188](https://github.com/open-telemetry/opentelemetry-rust/pull/1188)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
diff --git a/opentelemetry-proto/CHANGELOG.md b/opentelemetry-proto/CHANGELOG.md
index 91dfcf79ce..47d05ff173 100644
--- a/opentelemetry-proto/CHANGELOG.md
+++ b/opentelemetry-proto/CHANGELOG.md
@@ -10,6 +10,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ### Fixed
diff --git a/opentelemetry-sdk/CHANGELOG.md b/opentelemetry-sdk/CHANGELOG.md
index 85be8e7e5b..aaa4d14ad6 100644
--- a/opentelemetry-sdk/CHANGELOG.md
+++ b/opentelemetry-sdk/CHANGELOG.md
@@ -12,6 +12,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Default Resource (the one used when no other Resource is explicitly provided) now includes `TelemetryResourceDetector`,
   populating "telemetry.sdk.*" attributes.
   [#1066](https://github.com/open-telemetry/opentelemetry-rust/pull/1193).
@@ -33,22 +34,22 @@
   [#1293](https://github.com/open-telemetry/opentelemetry-rust/issues/1293)
   makes few breaking changes with respect to how Span attributes are stored to
   achieve performance gains. See below for details:
-  
+
   *Behavior Change*:
-  
+
   SDK will no longer perform de-duplication of Span attribute Keys. Please share
   [feedback
   here](https://github.com/open-telemetry/opentelemetry-rust/issues/1300), if
   you are affected.
-  
+
   *Breaking Change Affecting Exporter authors*:
-  
+
    `SpanData` now stores `attributes` as `Vec<KeyValue>` instead of
   `EvictedHashMap`. `SpanData` now expose `dropped_attributes_count` as a
   separate field.
-  
+
   *Breaking Change Affecting Sampler authors*:
-  
+
   `should_sample` changes `attributes` from `OrderMap<Key, Value>` to
   `Vec<KeyValue>`.
 
diff --git a/opentelemetry-semantic-conventions/CHANGELOG.md b/opentelemetry-semantic-conventions/CHANGELOG.md
index 50b1ff69cf..33d43e9f90 100644
--- a/opentelemetry-semantic-conventions/CHANGELOG.md
+++ b/opentelemetry-semantic-conventions/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ## v0.12.0
diff --git a/opentelemetry-stackdriver/CHANGELOG.md b/opentelemetry-stackdriver/CHANGELOG.md
index 81f542a448..f64d5f5743 100644
--- a/opentelemetry-stackdriver/CHANGELOG.md
+++ b/opentelemetry-stackdriver/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ## v0.17.0
diff --git a/opentelemetry-stdout/CHANGELOG.md b/opentelemetry-stdout/CHANGELOG.md
index 69c392e180..5f6520f752 100644
--- a/opentelemetry-stdout/CHANGELOG.md
+++ b/opentelemetry-stdout/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## vNext
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Timestamp is additionally exported in user-friendly format.
   [#1192](https://github.com/open-telemetry/opentelemetry-rust/pull/1192).
 - MetricExporter - Temporality is exported in user-friendly format.
diff --git a/opentelemetry-user-events-logs/CHANGELOG.md b/opentelemetry-user-events-logs/CHANGELOG.md
index eecfb33753..1af20b8dca 100644
--- a/opentelemetry-user-events-logs/CHANGELOG.md
+++ b/opentelemetry-user-events-logs/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Changed
+
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
+
 ## v0.1.0
 
 ### Added
diff --git a/opentelemetry-user-events-metrics/CHANGELOG.md b/opentelemetry-user-events-metrics/CHANGELOG.md
index 8fd6668511..f6ca50f1ec 100644
--- a/opentelemetry-user-events-metrics/CHANGELOG.md
+++ b/opentelemetry-user-events-metrics/CHANGELOG.md
@@ -8,6 +8,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Include error diagnosing messages for registering tracepoint
     [#1273](https://github.com/open-telemetry/opentelemetry-rust/pull/1273).
 - Add version, protocol to schema
diff --git a/opentelemetry-zipkin/CHANGELOG.md b/opentelemetry-zipkin/CHANGELOG.md
index 7cdb3522a0..9057f286e0 100644
--- a/opentelemetry-zipkin/CHANGELOG.md
+++ b/opentelemetry-zipkin/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 
 ## v0.17.0
diff --git a/opentelemetry-zpages/CHANGELOG.md b/opentelemetry-zpages/CHANGELOG.md
index 67a7bb5843..183e3c9ab8 100644
--- a/opentelemetry-zpages/CHANGELOG.md
+++ b/opentelemetry-zpages/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
 - Use tonic based generated files [#1214](https://github.com/open-telemetry/opentelemetry-rust/pull/1214)
 
diff --git a/opentelemetry/CHANGELOG.md b/opentelemetry/CHANGELOG.md
index d5ebad941c..ebb4cfa336 100644
--- a/opentelemetry/CHANGELOG.md
+++ b/opentelemetry/CHANGELOG.md
@@ -4,8 +4,9 @@
 
 ### Changed
 
+- Bump MSRV to 1.65 [#1318](https://github.com/open-telemetry/opentelemetry-rust/pull/1318)
 - Bump MSRV to 1.64 [#1203](https://github.com/open-telemetry/opentelemetry-rust/pull/1203)
-- `opentelemetry` crate now only carries the API types #1186. Use the `opentelemetry_sdk` crate for the SDK types. 
+- `opentelemetry` crate now only carries the API types #1186. Use the `opentelemetry_sdk` crate for the SDK types.
 - `trace::noop::NoopSpan` no longer implements `Default` and instead exposes
   a `const DEFAULT` value. [#1270](https://github.com/open-telemetry/opentelemetry-rust/pull/1270)
 - Updated crate documentation and examples.