diff --git a/release-notes.txt b/release-notes.txt
index 9e3c0bf9..a5a2d9fb 100644
--- a/release-notes.txt
+++ b/release-notes.txt
@@ -7,6 +7,9 @@ Release notes:
     - adds AsyncSeq vs TaskSeq comparison chart, #131
     - removes release-notes.txt from file dependencies, but keep in the package, #138
 
+0.3.1 (unreleased)
+    - fixes not calling Dispose for 'use!', 'use', or `finally` blocks in `try`...`finally` #157
+    
 0.3.0
     - internal renames, improved doc comments, signature files for complex types, hide internal-only types, fixes #112.
     - adds support for static TaskLike, allowing the same let! and do! overloads that F# task supports, fixes #110.
diff --git a/src/FSharp.Control.TaskSeq/TaskSeqBuilder.fs b/src/FSharp.Control.TaskSeq/TaskSeqBuilder.fs
index dbb4b06d..67107111 100644
--- a/src/FSharp.Control.TaskSeq/TaskSeqBuilder.fs
+++ b/src/FSharp.Control.TaskSeq/TaskSeqBuilder.fs
@@ -79,9 +79,8 @@ type TaskSeqStateMachineData<'T>() =
 
     member data.PushDispose(disposer: unit -> Task) =
         if isNull data.disposalStack then
-            data.disposalStack <- null
-
-    //data.disposalStack.Add disposer
+            data.disposalStack <- ResizeArray()
+        data.disposalStack.Add disposer
 
     member data.PopDispose() =
         if not (isNull data.disposalStack) then