diff --git a/ext/opentelemetry-ext-otcollector/CHANGELOG.md b/ext/opentelemetry-ext-otcollector/CHANGELOG.md
index 617d979ab29..4b7acd14906 100644
--- a/ext/opentelemetry-ext-otcollector/CHANGELOG.md
+++ b/ext/opentelemetry-ext-otcollector/CHANGELOG.md
@@ -2,3 +2,4 @@
 
 ## Unreleased
 
+## 0.5b0
\ No newline at end of file
diff --git a/opentelemetry-api/CHANGELOG.md b/opentelemetry-api/CHANGELOG.md
index 9864fc67d3d..776cc98bb2c 100644
--- a/opentelemetry-api/CHANGELOG.md
+++ b/opentelemetry-api/CHANGELOG.md
@@ -2,6 +2,27 @@
 
 ## Unreleased
 
+## 0.5b0
+
+- Adding Correlation Context API and propagator
+  ([#471](https://github.com/open-telemetry/opentelemetry-python/pull/471))
+- Adding a global configuration module to simplify setting and getting globals
+  ([#466](https://github.com/open-telemetry/opentelemetry-python/pull/466))
+- Rename metric handle to bound metric
+  ([#470](https://github.com/open-telemetry/opentelemetry-python/pull/470))
+- Moving resources to sdk
+  ([#464](https://github.com/open-telemetry/opentelemetry-python/pull/464))
+- Implementing propagators to API to use context
+  ([#446](https://github.com/open-telemetry/opentelemetry-python/pull/446))
+- Adding named meters, removing batchers
+  ([#431](https://github.com/open-telemetry/opentelemetry-python/pull/431))
+- Renaming TraceOptions to TraceFlags
+  ([#450](https://github.com/open-telemetry/opentelemetry-python/pull/450))
+- Renaming TracerSource to TraceProvider
+  ([#441](https://github.com/open-telemetry/opentelemetry-python/pull/441))
+- Adding attach/detach methods as per spec
+  ([#429](https://github.com/open-telemetry/opentelemetry-python/pull/450) 
+
 ## 0.4a0
 
 Released 2020-02-21
diff --git a/opentelemetry-sdk/CHANGELOG.md b/opentelemetry-sdk/CHANGELOG.md
index 54502d7eae7..7ad0da364e4 100644
--- a/opentelemetry-sdk/CHANGELOG.md
+++ b/opentelemetry-sdk/CHANGELOG.md
@@ -2,6 +2,21 @@
 
 ## Unreleased
 
+## 0.5b0
+
+- Adding Correlation Context SDK and propagator
+  ([#471](https://github.com/open-telemetry/opentelemetry-python/pull/471))
+- Adding OT Collector metrics exporter
+  ([#454](https://github.com/open-telemetry/opentelemetry-python/pull/454))
+- Improve validation of attributes
+  ([#460](https://github.com/open-telemetry/opentelemetry-python/pull/460))
+- Moving resources to sdk
+  ([#464](https://github.com/open-telemetry/opentelemetry-python/pull/464))
+- Re-raise errors caught in opentelemetry.sdk.trace.Tracer.use_span()
+  ([#469](https://github.com/open-telemetry/opentelemetry-python/pull/469))
+- Implement observer instrument
+  ([#425](https://github.com/open-telemetry/opentelemetry-python/pull/425))
+
 ## 0.4a0 
 
 Released 2020-02-21