diff --git a/.github/workflows/code-standards.yml b/.github/workflows/code-standards.yml
index 4b5566d..79bb17b 100644
--- a/.github/workflows/code-standards.yml
+++ b/.github/workflows/code-standards.yml
@@ -65,12 +65,14 @@ jobs:
       - name: 'Setup jq'
         uses: dcarbone/install-jq-action@v2
       - name: Install PHP CS Fixer
-        run: composer global require friendsofphp/php-cs-fixer:${{ inputs.version }}
+        run: composer global require friendsofphp/php-cs-fixer:${INPUTS_VERSION}
+        env:
+          INPUTS_VERSION: ${{ inputs.version }}
       - name: Run PHP CS Fixer
         run: |
           # set environment variables in script
-          export RULES=$(echo $'${{ inputs.rules }} ${{ inputs.add-rules }}'|tr -d '\n\t\r '|jq -s '.[0] * .[1]' -crM)
-          export EXCLUDE_PATTERNS=$(echo $'${{ inputs.exclude-patterns }}'|tr -d '\n\t\r ')
+          export RULES=$(echo $'${INPUTS_RULES} ${INPUTS_ADD_RULES}'|tr -d '\n\t\r '|jq -s '.[0] * .[1]' -crM)
+          export EXCLUDE_PATTERNS=$(echo $'${INPUTS_EXCLUDE_PATTERNS}'|tr -d '\n\t\r ')
 
           # use config path only if EXCLUDE_PATTERN is empty
           CMD_PATH=$([ "$EXCLUDE_PATTERNS" = "" ] && echo "$CONFIG_PATH" || echo "")
@@ -93,3 +95,7 @@ jobs:
             echo ""
             exit 1
           fi
+        env:
+          INPUTS_RULES: ${{ inputs.rules }}
+          INPUTS_ADD_RULES: ${{ inputs.add-rules }}
+          INPUTS_EXCLUDE_PATTERNS: ${{ inputs.exclude-patterns }}
diff --git a/.github/workflows/doctum.yml b/.github/workflows/doctum.yml
index 61a9a32..e0076db 100644
--- a/.github/workflows/doctum.yml
+++ b/.github/workflows/doctum.yml
@@ -52,13 +52,13 @@ jobs:
             use Doctum\Version\GitVersionCollection;
             use Symfony\Component\Finder\Finder;
 
-            $defaultVersion = '${{ inputs.default_version }}';
-            $tagPattern = '${{ inputs.tag_pattern }}';
+            $defaultVersion = '${INPUTS_DEFAULT_VERSION}';
+            $tagPattern = '${INPUTS_TAG_PATTERN}';
 
             $iterator = Finder::create()
                 ->files()
                 ->name('*.php')
-                ->notName('${{ inputs.exclude_file }}')
+                ->notName('${INPUTS_EXCLUDE_FILE}')
                 ->exclude('GPBMetadata')
                 ->in(__DIR__ . '/src');
 
@@ -71,8 +71,8 @@ jobs:
             }
 
             return new Doctum($iterator, [
-                'title'                => '${{ inputs.title }}',
-                'theme'                => '${{ inputs.theme }}',
+                'title'                => '${INPUTS_TITLE}',
+                'theme'                => '${INPUTS_THEME}',
                 'versions'             => $versions,
                 'build_dir'            => __DIR__ . '/.build/%version%',
                 'cache_dir'            => __DIR__ . '/.cache/%version%',
@@ -84,6 +84,12 @@ jobs:
             )
             echo "$DOCTUM_CONFIG"; # for debugging
             echo "$DOCTUM_CONFIG" > doctum-config.php;
+          env:
+            INPUTS_DEFAULT_VERSION: ${{ inputs.default_version }}
+            INPUTS_TAG_PATTERN: ${{ inputs.tag_pattern }}
+            INPUTS_EXCLUDE_FILE: ${{ inputs.exclude_file }}
+            INPUTS_TITLE: ${{ inputs.title }}
+            INPUTS_THEME: ${{ inputs.theme }}
         - name: Run Doctum to Generate Documentation
           run: |
             php doctum.phar update doctum-config.php --ignore-parse-errors
@@ -95,8 +101,11 @@ jobs:
           name: Redirect Index to Latest Version
           run: |
             cat << EOF > .build/index.html
-              <meta http-equiv='refresh' content='0;url=/${{ github.event.repository.name }}/${{ inputs.default_version }}'>
+              <meta http-equiv='refresh' content='0;url=/${GITHUB_EVENT_REPOSITORY_NAME}/${INPUTS_DEFAULT_VERSION}'>
             EOF
+          env:
+            GITHUB_EVENT_REPOSITORY_NAME: ${{ github.event.repository.name }}
+            INPUTS_DEFAULT_VERSION: ${{ inputs.default_version }}
         - if: ${{ !inputs.dry_run }}
           name: Move generated files into GitHub Pages branch
           run: |
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index 201dc30..cbad84e 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -28,6 +28,10 @@ jobs:
       - name: Run Script
         run: |
           composer install -q
-          composer global require phpstan/phpstan:${{ inputs.version }} -q
-          ~/.composer/vendor/bin/phpstan analyse ${{ inputs.paths }} \
-            --autoload-file=${{ inputs.autoload-file }}
+          composer global require phpstan/phpstan:${INPUTS_VERSION} -q
+          ~/.composer/vendor/bin/phpstan analyse ${INPUTS_PATHS} \
+            --autoload-file=${INPUTS_AUTOLOAD_FILE}
+        env:
+          INPUTS_VERSION: ${{ inputs.version }}
+          INPUTS_PATHS: ${{ inputs.paths }}
+          INPUTS_AUTOLOAD_FILE: ${{ inputs.autoload-file }}