diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index 97262c5..0e0f8dd 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -44,3 +44,25 @@ jobs:
         run: |
           echo "main() { print('hello world'); }" > hello.dart
           dart hello.dart
+          
+  test_pub:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        sdk: [stable, beta]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          sdk: ${{ matrix.sdk }}
+
+      - name: Global activate + run
+        run: |
+          dart pub global activate stagehand
+          mkdir testapp
+          cd testapp
+          stagehand console-simple
+          dart pub get
+          dart run
diff --git a/README.md b/README.md
index 5fcc4ce..3fc23e8 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,9 @@ jobs:
 
 # Version history
 
+## v0.5
+  * Fixed a Windows `pub global activate` path issue.
+
 ## v0.4
 
   * Removed previously deprecated input `channel`. Use the `sdk` input instead.
diff --git a/setup.sh b/setup.sh
index 71a089b..29f12b2 100755
--- a/setup.sh
+++ b/setup.sh
@@ -59,6 +59,9 @@ if [ $? -ne 0 ]; then
 fi
 rm "${HOME}/dartsdk.zip"
 
+# Configure pub to use a fixed location.
+echo "PUB_CACHE=${HOME}/.pub-cache" >> $GITHUB_ENV
+
 # Update paths.
 echo "${HOME}/.pub-cache/bin" >> $GITHUB_PATH
 echo "${RUNNER_TOOL_CACHE}/dart-sdk/bin" >> $GITHUB_PATH