diff --git a/.github/workflows/test-install.yml b/.github/workflows/test-install.yml
index 2bc9602..5c74f26 100644
--- a/.github/workflows/test-install.yml
+++ b/.github/workflows/test-install.yml
@@ -11,6 +11,11 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-latest, windows-latest, ubuntu-latest]
+        include:
+          - expected-version: 5.9-dev
+
+          - os: ubuntu-latest
+            expected-version: 5.10
 
     name: Test Swift toolchain install on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
@@ -24,8 +29,9 @@ jobs:
         branch: development
         tag: DEVELOPMENT-SNAPSHOT-2023-05-20-a
 
-    - name: Check Swift version
-      run: swift --version
+    - name: check swift version
+      run: swift --version && swift --version | grep -q 'version ${{ matrix.expected-version }} '
+      shell: bash
 
     - name: get macOS smoke test prerequisites
       if: ${{ runner.os == 'macOS' }}
diff --git a/action.yml b/action.yml
index d255301..cd15d59 100644
--- a/action.yml
+++ b/action.yml
@@ -286,5 +286,5 @@ runs:
         installer -pkg swift-${{ inputs.tag }}-osx.pkg -target CurrentUserHomeDirectory
         rm -f swift-${{ inputs.tag }}-osx.pkg
 
-        echo "TOOLCHAINS=$(plutil -extract 'CFBundleIdentifier' xml1 ${HOME}/Library/Developer/Toolchains/swift-${{ inputs.tag }}.xctoolchain/Info.plist | xmllint --xpath '//plist/string/text()' -)" >> $GITHUB_ENV
+        echo "TOOLCHAINS=$(plutil -convert swift ${HOME}/Library/Developer/Toolchains/swift-${{ inputs.tag }}.xctoolchain/Info.plist -o - | sed -E -e '/"org.swift./s/.*"(org.swift[^"]*)".*/\1/')" >> $GITHUB_ENV
       shell: bash