diff --git a/README.md b/README.md
index 8cdebff..d51d75d 100644
--- a/README.md
+++ b/README.md
@@ -36,8 +36,8 @@ There are three kinds of version labels you can use.
 ### Outputs
 
 * `cache-hit` - A boolean value to indicate a cache was found for the packages requested.
-* `package-version-list` - The main requested packages and versions that are installed. Represented as a comma delimited list with colon delimit on the package version (i.e. \<package1>:<version1\>,\<package2>:\<version2>,...).
-* `all-package-version-list` - All the pulled in packages and versions, including dependencies, that are installed. Represented as a comma delimited list with colon delimit on the package version (i.e. \<package1>:<version1\>,\<package2>:\<version2>,...).
+* `package-version-list` - The main requested packages and versions that are installed. Represented as a comma delimited list with equals delimit on the package version (i.e. \<package1>=<version1\>,\<package2>=\<version2>,...).
+* `all-package-version-list` - All the pulled in packages and versions, including dependencies, that are installed. Represented as a comma delimited list with equals delimit on the package version (i.e. \<package1>=<version1\>,\<package2>=\<version2>,...).
 
 ### Cache scopes
 
diff --git a/action.yml b/action.yml
index 0cc2470..035ace6 100644
--- a/action.yml
+++ b/action.yml
@@ -7,7 +7,7 @@ branding:
 
 inputs:
   packages:
-    description: 'Space delimited list of packages to install.'
+    description: 'Space delimited list of packages to install. Version can be specified optionally using APT command syntax of <name>=<version> (e.g. xdot=1.2-2).'
     required: true
     default: ''
   version:
@@ -33,10 +33,10 @@ outputs:
     # Need to output true and false instead of true and nothing.
     value: ${{ steps.load-cache.outputs.cache-hit || false }}
   package-version-list:
-    description: 'The main requested packages and versions that are installed. Represented as a comma delimited list with colon delimit on the package version (i.e. <package>:<version,<package>:<version>).'
+    description: 'The main requested packages and versions that are installed. Represented as a comma delimited list with equals delimit on the package version (i.e. <package>:<version,<package>:<version>).'
     value: ${{ steps.post-cache.outputs.package-version-list }}
   all-package-version-list:
-    description: 'All the pulled in packages and versions, including dependencies, that are installed. Represented as a comma delimited list with colon delimit on the package version (i.e. <package>:<version,<package>:<version>).'
+    description: 'All the pulled in packages and versions, including dependencies, that are installed. Represented as a comma delimited list with equals delimit on the package version (i.e. <package>:<version,<package>:<version>).'
     value: ${{ steps.post-cache.outputs.all-package-version-list }}
 
 runs:
@@ -65,7 +65,7 @@ runs:
         key: cache-apt-pkgs_${{ env.CACHE_KEY }}
 
     - id: post-cache
-      run: |      
+      run: |
         ${GITHUB_ACTION_PATH}/post_cache_action.sh \
           ~/cache-apt-pkgs \
           / \