diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index b839ab4..8354c4f 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,4 +1,4 @@
-### 3.3.2
+### 4.0.0
 * Added `AsyncSeq.mapAsyncUnorderedParallelThrottled` for throttled unordered parallel mapping ([#31](https://github.com/fsprojects/FSharp.Control.AsyncSeq/issues/31), [PR #225](https://github.com/fsprojects/FSharp.Control.AsyncSeq/pull/225)).
 * Fixed `ofAsyncEnum` deadlock on single-threaded runtimes such as Blazor WASM ([#152](https://github.com/fsprojects/FSharp.Control.AsyncSeq/issues/152), [PR #229](https://github.com/fsprojects/FSharp.Control.AsyncSeq/pull/229)).
 * Updated `PackageLicenseExpression` (removed deprecated `PackageLicenseUrl`) and updated `Microsoft.Bcl.AsyncInterfaces` to 10.0.3 ([#168](https://github.com/fsprojects/FSharp.Control.AsyncSeq/issues/168), [PR #228](https://github.com/fsprojects/FSharp.Control.AsyncSeq/pull/228)).
diff --git a/version.props b/version.props
index 56ce3eb..3fe9b80 100644
--- a/version.props
+++ b/version.props
@@ -1,5 +1,5 @@
 <Project>
   <PropertyGroup>
-    <Version>3.3.2</Version>
+    <Version>4.0.0</Version>
   </PropertyGroup>
 </Project>