diff --git a/.github/workflows/upload-binaries.yml b/.github/workflows/upload-binaries.yml
index 3c81a006..8882fe66 100644
--- a/.github/workflows/upload-binaries.yml
+++ b/.github/workflows/upload-binaries.yml
@@ -34,18 +34,24 @@ jobs:
       run: stack --system-ghc build --ghc-options=-Werror
 
     - name: Set extension to .exe on Windows
-      run: echo "::set-env name=EXT::.exe"
-      if: matrix.os == 'windows-latest'
+      id: get_ext
+      run: |
+        if [ ${{ matrix.os }} == windows-latest ]; then
+          ext=.exe
+        fi
+        echo "::set-output name=ext::$ext"
+      shell: bash
 
     - name: Get binary path
+      id: get_binary_path
       run: |
-        echo "::set-env name=BINARY_PATH::$(stack --system-ghc path --local-install-root)/bin/jikka${{ env.EXT }}"
+        echo "::set-output name=binary_path::$(stack --system-ghc path --local-install-root)/bin/jikka${{ steps.get_ext.outputs.ext }}"
       shell: bash
 
     - name: Compress binary
       uses: svenstaro/upx-action@2.0.1
       with:
-        file: ${{ env.BINARY_PATH }}
+        file: ${{ steps.get_binary_path.outputs.binary_path }}
 
     - name: Upload Release Asset
       uses: actions/upload-release-asset@v1.0.1
@@ -53,6 +59,6 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         upload_url: ${{ github.event.release.upload_url }}
-        asset_path: ${{ env.BINARY_PATH }}
-        asset_name: jikka-${{ github.event.release.tag_name }}-${{ runner.os }}${{ env.EXT }}
+        asset_path: ${{ steps.get_binary_path.outputs.binary_path }}
+        asset_name: jikka-${{ github.event.release.tag_name }}-${{ runner.os }}${{ steps.get_ext.outputs.ext }}
         asset_content_type: application/octet-stream
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b77b9915..0a672bd3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## 2021-07-28: v5.0.11.1
 
-Uploaded to Hackage
+Uploaded to Hackage: <https://hackage.haskell.org/package/Jikka>
 
 ## 2021-07-21: v5.0.11.0
 
diff --git a/README.md b/README.md
index 66fd964b..267c557a 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,8 @@ for developpers:
     -   [CONTRIBUTING.ja.md](https://github.com/kmyk/Jikka/blob/master/CONTRIBUTING.ja.md) (Japanese translation)
 -   [docs/DESIGN.md](https://github.com/kmyk/Jikka/blob/master/docs/DESIGN.md) (Japanese)
 -   [docs/how-it-works.pdf](https://github.com/kmyk/Jikka/blob/master/docs/how-it-works.pdf) (Japanese)
--   [Haddock](https://kmyk.github.io/Jikka/)
+-   [Haddock](https://hackage.haskell.org/package/Jikka)
+    -   [Haddock (master)](https://kmyk.github.io/Jikka/)
 
 
 ## Examples