diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..53bf9576
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "docker" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
diff --git a/Dockerfile b/Dockerfile
index d6741783..5d09ed39 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM hashicorp/terraform:1.0.6
+FROM hashicorp/terraform:1.5.7
 
 LABEL repository="https://github.com/robburger/terraform-pr-commenter" \
       homepage="https://github.com/robburger/terraform-pr-commenter" \
diff --git a/README.md b/README.md
index a51a1b4b..eb442a59 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ This action can only be run after a Terraform `fmt`, `init`, `plan` or `validate
 | `commenter_type`     | _required_  | The type of comment. Options: [`fmt`, `init`, `plan`, `validate`] |
 | `commenter_input`    | _required_  | The comment to post from a previous step output.                  |
 | `commenter_exitcode` | _required_  | The exit code from a previous step output.                        |
+| `commenter_comment`  | _optional_  | An optional comment to add to the end of the headline.          |
 
 ### Environment Variables
 
diff --git a/action.yml b/action.yml
index ea2f2464..3f64e2f2 100644
--- a/action.yml
+++ b/action.yml
@@ -14,6 +14,10 @@ inputs:
   commenter_exitcode:
     description: 'The exit code from a previous step output'
     required: true
+  commenter_comment:
+    description: 'An optional comment to add to the headline.'
+    required: false
+    default: ''
 runs:
   using: 'docker'
   image: 'Dockerfile'
@@ -21,3 +25,4 @@ runs:
     - ${{ inputs.commenter_type }}
     - ${{ inputs.commenter_input }}
     - ${{ inputs.commenter_exitcode }}
+    - ${{ inputs.commenter_comment }}
diff --git a/entrypoint.sh b/entrypoint.sh
index 1f71f2c8..bf1ae162 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -24,6 +24,8 @@ if [[ ! "$1" =~ ^(fmt|init|plan|validate)$ ]]; then
   exit 1
 fi
 
+comment="$4"
+
 ##################
 # Shared Variables
 ##################
@@ -82,7 +84,7 @@ if [[ $COMMAND == 'fmt' ]]; then
   # Meaning: 1 = Malformed Terraform CLI command. 2 = Terraform parse error.
   # Actions: Build PR comment.
   if [[ $EXIT_CODE -eq 1 || $EXIT_CODE -eq 2 ]]; then
-    PR_COMMENT="### Terraform \`fmt\` Failed
+    PR_COMMENT="### Terraform \`fmt\` Failed $comment
 <details$DETAILS_STATE><summary>Show Output</summary>
 
 \`\`\`
@@ -107,7 +109,7 @@ $THIS_FILE_DIFF
 </details>"
     done
 
-    PR_COMMENT="### Terraform \`fmt\` Failed
+    PR_COMMENT="### Terraform \`fmt\` Failed $comment
 $ALL_FILES_DIFF"
   fi
 
@@ -147,7 +149,7 @@ if [[ $COMMAND == 'init' ]]; then
   # Meaning: Terraform initialize failed or malformed Terraform CLI command.
   # Actions: Build PR comment.
   if [[ $EXIT_CODE -eq 1 ]]; then
-    PR_COMMENT="### Terraform \`init\` Failed
+    PR_COMMENT="### Terraform \`init\` Failed $comment
 <details$DETAILS_STATE><summary>Show Output</summary>
 
 \`\`\`
@@ -170,7 +172,8 @@ fi
 if [[ $COMMAND == 'plan' ]]; then
   # Look for an existing plan PR comment and delete
   echo -e "\033[34;1mINFO:\033[0m Looking for an existing plan PR comment."
-  PR_COMMENT_ID=$(curl -sS -H "$AUTH_HEADER" -H "$ACCEPT_HEADER" -L "$PR_COMMENTS_URL" | jq '.[] | select(.body|test ("### Terraform `plan` .* for Workspace: `'"$WORKSPACE"'`")) | .id')
+  PR_COMMENT_ID=$(curl -sS -H "$AUTH_HEADER" -H "$ACCEPT_HEADER" -L "$PR_COMMENTS_URL" |
+      jq '.[] | select(.body|test ("### Terraform `plan` .* for Workspace: `'"$WORKSPACE"'` '"$comment"'")) | .id')
   if [ "$PR_COMMENT_ID" ]; then
     echo -e "\033[34;1mINFO:\033[0m Found existing plan PR comment: $PR_COMMENT_ID. Deleting."
     PR_COMMENT_URL="$PR_COMMENT_URI/$PR_COMMENT_ID"
@@ -190,7 +193,7 @@ if [[ $COMMAND == 'plan' ]]; then
     if [[ $COLOURISE == 'true' ]]; then
       CLEAN_PLAN=$(echo "$CLEAN_PLAN" | sed -r 's/^~/!/g') # Replace ~ with ! to colourise the diff in GitHub comments
     fi
-    PR_COMMENT="### Terraform \`plan\` Succeeded for Workspace: \`$WORKSPACE\`
+    PR_COMMENT="### Terraform \`plan\` Succeeded for Workspace: \`$WORKSPACE\` $comment
 <details$DETAILS_STATE><summary>Show Output</summary>
 
 \`\`\`diff
@@ -203,7 +206,7 @@ $CLEAN_PLAN
   # Meaning: Terraform plan failed.
   # Actions: Build PR comment.
   if [[ $EXIT_CODE -eq 1 ]]; then
-    PR_COMMENT="### Terraform \`plan\` Failed for Workspace: \`$WORKSPACE\`
+    PR_COMMENT="### Terraform \`plan\` Failed for Workspace: \`$WORKSPACE\` $comment
 <details$DETAILS_STATE><summary>Show Output</summary>
 
 \`\`\`
@@ -248,7 +251,7 @@ if [[ $COMMAND == 'validate' ]]; then
   # Meaning: Terraform validate failed or malformed Terraform CLI command.
   # Actions: Build PR comment.
   if [[ $EXIT_CODE -eq 1 ]]; then
-    PR_COMMENT="### Terraform \`validate\` Failed
+    PR_COMMENT="### Terraform \`validate\` Failed $comment
 <details$DETAILS_STATE><summary>Show Output</summary>
 
 \`\`\`