diff --git a/HISTORY.md b/HISTORY.md
index 1e12aae..c818f04 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [v4](https://github.com/tj-actions/branch-names/tree/v4) (2021-04-25)
+
+[Full Changelog](https://github.com/tj-actions/branch-names/compare/v3.6...v4)
+
+**Merged pull requests:**
+
+- Upgraded to v3.6 [\#33](https://github.com/tj-actions/branch-names/pull/33) ([jackton1](https://github.com/jackton1))
+
 ## [v3.6](https://github.com/tj-actions/branch-names/tree/v3.6) (2021-04-25)
 
 [Full Changelog](https://github.com/tj-actions/branch-names/compare/v3.5...v3.6)
diff --git a/README.md b/README.md
index e6e2bd7..1a85fd1 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ Get branch or tag information without the `/ref/*` prefix
       - uses: actions/checkout@v2
       - name: Get branch names
         id: branch-name
-        uses: tj-actions/branch-names@v3.6
+        uses: tj-actions/branch-names@v4
 ```
 
 ## Examples
@@ -42,7 +42,7 @@ Get branch or tag information without the `/ref/*` prefix
       - uses: actions/checkout@v2
       - name: Get branch names
         id: branch-name
-        uses: tj-actions/branch-names@v3.6
+        uses: tj-actions/branch-names@v4
         
       - name: Running on the default branch.
         if: steps.branch-name.outputs.is_default == 'true'
@@ -107,7 +107,7 @@ on:
     steps:
       - name: Get branch names.
         id: branch-names
-        uses: tj-actions/branch-names@v3.6
+        uses: tj-actions/branch-names@v4
       - uses: actions/checkout@v2
         with:
           ref: ${{ steps.branch-names.outputs.base_ref_branch }}