diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 41079ef2..f5039746 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,3 +1,7 @@
+### 4.8.0 - July 06, 2023
+
+- [Added cancellableTaskValidation feature, tests, and documentation](https://github.com/demystifyfp/FsToolkit.ErrorHandling/pull/217) Credits @1eyewonder
+
 ### 4.7.0 - June 21, 2023
 - [Added AsyncValidation](https://github.com/demystifyfp/FsToolkit.ErrorHandling/pull/215) Credits @1eyewonder
 
diff --git a/src/FsToolkit.ErrorHandling.AsyncSeq/AssemblyInfo.fs b/src/FsToolkit.ErrorHandling.AsyncSeq/AssemblyInfo.fs
index 022a59cf..65a654b9 100644
--- a/src/FsToolkit.ErrorHandling.AsyncSeq/AssemblyInfo.fs
+++ b/src/FsToolkit.ErrorHandling.AsyncSeq/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.AsyncSeq")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.AsyncSeq"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/src/FsToolkit.ErrorHandling.IcedTasks/AssemblyInfo.fs b/src/FsToolkit.ErrorHandling.IcedTasks/AssemblyInfo.fs
index e1dbf701..dfaf9a6b 100644
--- a/src/FsToolkit.ErrorHandling.IcedTasks/AssemblyInfo.fs
+++ b/src/FsToolkit.ErrorHandling.IcedTasks/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.IcedTasks")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.IcedTasks"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/src/FsToolkit.ErrorHandling.JobResult/AssemblyInfo.fs b/src/FsToolkit.ErrorHandling.JobResult/AssemblyInfo.fs
index 397f12fe..30992a82 100644
--- a/src/FsToolkit.ErrorHandling.JobResult/AssemblyInfo.fs
+++ b/src/FsToolkit.ErrorHandling.JobResult/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.JobResult")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.JobResult"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/src/FsToolkit.ErrorHandling.TaskResult/AssemblyInfo.fs b/src/FsToolkit.ErrorHandling.TaskResult/AssemblyInfo.fs
index 19f0951f..e2396a10 100644
--- a/src/FsToolkit.ErrorHandling.TaskResult/AssemblyInfo.fs
+++ b/src/FsToolkit.ErrorHandling.TaskResult/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.TaskResult")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.TaskResult"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/src/FsToolkit.ErrorHandling/AssemblyInfo.fs b/src/FsToolkit.ErrorHandling/AssemblyInfo.fs
index 4f81a5c8..53e28b82 100644
--- a/src/FsToolkit.ErrorHandling/AssemblyInfo.fs
+++ b/src/FsToolkit.ErrorHandling/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/tests/FsToolkit.ErrorHandling.AsyncSeq.Tests/AssemblyInfo.fs b/tests/FsToolkit.ErrorHandling.AsyncSeq.Tests/AssemblyInfo.fs
index 50710615..f99455bd 100644
--- a/tests/FsToolkit.ErrorHandling.AsyncSeq.Tests/AssemblyInfo.fs
+++ b/tests/FsToolkit.ErrorHandling.AsyncSeq.Tests/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.AsyncSeq.Tests")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.AsyncSeq.Tests"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/tests/FsToolkit.ErrorHandling.IcedTasks.Tests/AssemblyInfo.fs b/tests/FsToolkit.ErrorHandling.IcedTasks.Tests/AssemblyInfo.fs
index d907b57f..7a85a21b 100644
--- a/tests/FsToolkit.ErrorHandling.IcedTasks.Tests/AssemblyInfo.fs
+++ b/tests/FsToolkit.ErrorHandling.IcedTasks.Tests/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.IcedTasks.Tests")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.IcedTasks.Tests"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/tests/FsToolkit.ErrorHandling.JobResult.Tests/AssemblyInfo.fs b/tests/FsToolkit.ErrorHandling.JobResult.Tests/AssemblyInfo.fs
index 02d14b93..44a590c3 100644
--- a/tests/FsToolkit.ErrorHandling.JobResult.Tests/AssemblyInfo.fs
+++ b/tests/FsToolkit.ErrorHandling.JobResult.Tests/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.JobResult.Tests")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.JobResult.Tests"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/tests/FsToolkit.ErrorHandling.TaskResult.Tests/AssemblyInfo.fs b/tests/FsToolkit.ErrorHandling.TaskResult.Tests/AssemblyInfo.fs
index 6f01299f..f9328973 100644
--- a/tests/FsToolkit.ErrorHandling.TaskResult.Tests/AssemblyInfo.fs
+++ b/tests/FsToolkit.ErrorHandling.TaskResult.Tests/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.TaskResult.Tests")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.TaskResult.Tests"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"
diff --git a/tests/FsToolkit.ErrorHandling.Tests/AssemblyInfo.fs b/tests/FsToolkit.ErrorHandling.Tests/AssemblyInfo.fs
index 78161f71..e412e690 100644
--- a/tests/FsToolkit.ErrorHandling.Tests/AssemblyInfo.fs
+++ b/tests/FsToolkit.ErrorHandling.Tests/AssemblyInfo.fs
@@ -5,8 +5,8 @@ open System.Reflection
 [<assembly: AssemblyTitleAttribute("FsToolkit.ErrorHandling.Tests")>]
 [<assembly: AssemblyProductAttribute("FsToolkit.ErrorHandling")>]
 [<assembly: AssemblyDescriptionAttribute("FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling.")>]
-[<assembly: AssemblyVersionAttribute("4.7.0")>]
-[<assembly: AssemblyFileVersionAttribute("4.7.0")>]
+[<assembly: AssemblyVersionAttribute("4.8.0")>]
+[<assembly: AssemblyFileVersionAttribute("4.8.0")>]
 [<assembly: AssemblyConfigurationAttribute("Release")>]
 do ()
 
@@ -14,6 +14,6 @@ module internal AssemblyVersionInformation =
     let [<Literal>] AssemblyTitle = "FsToolkit.ErrorHandling.Tests"
     let [<Literal>] AssemblyProduct = "FsToolkit.ErrorHandling"
     let [<Literal>] AssemblyDescription = "FsToolkit.ErrorHandling is a utility library to work with the Result type in F#, and allows you to do clear, simple and powerful error handling."
-    let [<Literal>] AssemblyVersion = "4.7.0"
-    let [<Literal>] AssemblyFileVersion = "4.7.0"
+    let [<Literal>] AssemblyVersion = "4.8.0"
+    let [<Literal>] AssemblyFileVersion = "4.8.0"
     let [<Literal>] AssemblyConfiguration = "Release"