diff --git a/Directory.Build.props b/Directory.Build.props
index 84ac559a4..8e040e950 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -13,7 +13,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <PackageTags>f# FSharp Applicative Monad MonadTransformer Arrow Overloading</PackageTags>
-    <VersionPrefix>1.9.0</VersionPrefix>
+    <VersionPrefix>1.9.1</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <Version Condition=" '$(VersionSuffix)' != '' ">$(VersionPrefix)-$(VersionSuffix)</Version>
     <Version Condition=" '$(VersionSuffix)' == '' ">$(VersionPrefix)</Version>
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 62719864f..909a35be5 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,4 +1,5 @@
-#### 1.9.0  - January 11 2026
+#### 1.9.1  - January 11 2026
+
  - Task related function fixes and improvements
  - Enable try blocks for ValueTask
  - Add Obj module
diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index 342849d98..a1a67bb8a 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -1,17 +1,17 @@
-Release Notes for FSharpPlus 1.9.0  - January 11 2026
+Release Notes for FSharpPlus 1.9.1  - January 11 2026
 -----------------------------------------------------
 
-Task related function fixes and improvements
-Enable try blocks for ValueTask
-Add Obj module
-Add some error handling functions for Tasks
-Add ignore to some common type extensions
-Add bindTask and bindInto to Result
-Add missing (.>) and (<.) zip-applicative operators
-Add Active Pattern for CI strings and AggregateException
-Rename non-sequential applicative CEs to zapp
-Fix compilation for Fable 4.27
-Fix several functions in ResizeArray
-Fix Seq.lift3
-Fix some XML comments
-Drop target framework version net45
\ No newline at end of file
+ - Task related function fixes and improvements
+ - Enable try blocks for ValueTask
+ - Add Obj module
+ - Add some error handling functions for Tasks
+ - Add ignore to some common type extensions
+ - Add bindTask and bindInto to Result
+ - Add missing (.>) and (<.) zip-applicative operators
+ - Add Active Pattern for CI strings and AggregateException
+ - Rename non-sequential applicative CEs to zapp
+ - Fix compilation for Fable 4.27
+ - Fix several functions in ResizeArray
+ - Fix Seq.lift3
+ - Fix some XML comments
+ - Drop target framework version net45 
\ No newline at end of file
diff --git a/src/FSharpPlus/Extensions/String.fs b/src/FSharpPlus/Extensions/String.fs
index a4da3e924..acc6df881 100644
--- a/src/FSharpPlus/Extensions/String.fs
+++ b/src/FSharpPlus/Extensions/String.fs
@@ -82,7 +82,7 @@ module String =
     /// 
     /// Note this is distinct from trim which trims the given characters,
     /// not white spaces.
-    let trim (source: string) =
+    let trimWhiteSpaces (source: string) =
         let source = nullArgCheck (nameof source) source
         
         source.Trim ()
@@ -154,7 +154,7 @@ module String =
         source.PadRight (totalLength, paddingChar)
 
     /// Removes all leading and trailing occurrences of specified characters from the given string.
-    let trimBoth  (trimChars: char seq) (source: string) =
+    let trim  (trimChars: char seq) (source: string) =
         let source = nullArgCheck (nameof source) source
         
         source.Trim (Seq.toArray trimChars)