diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8ef489a..61629a7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,12 +7,24 @@ on:
       - 'releases/*'
 
 jobs:
-  test:
+  test-case-sensitive:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
     - uses: ./
       with:
         terms: "wip|fix|fixme"
+        case-sensitive: true
+      env:
+        ENVIRONMENT: test
+  
+  test-case-insensitive:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: ./
+      with:
+        terms: "wip|fix|fixme"
+        case-sensitive: false
       env:
         ENVIRONMENT: test
diff --git a/README.md b/README.md
index 4369625..4dc4a56 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,7 @@ jobs:
     - uses: bbugh/action-fixme-check@master # or @ the latest release
       with:
       	terms: 'WIP|FIXME' # optional, defaults to `FIXME`
+      	case-sensitive: false  # optional, defaults to `false`
 ```
 
 ## Support
@@ -48,6 +49,8 @@ jobs:
 - I am using `FIXME:` here.
 - Nothing to see here.
 - I am using `FIX:` here.
+- I am using `wip:` here.
+- I am using `fixme:` here.
 
 ## License
 
diff --git a/action.yml b/action.yml
index 9288a71..300e2dc 100644
--- a/action.yml
+++ b/action.yml
@@ -7,9 +7,15 @@ branding:
 runs:
   using: 'docker'
   image: 'Dockerfile'
+  args:
+    - ${{ inputs.case-sensitive }}  
 inputs:
   terms:
     description: 'The pipe-delimited searchable terms to pass as a regex group to `git grep`.'
     required: false
     default: "FIXME"
+  case-sensitive:
+    description: 'Whether the searchable terms passed to `git grep` should be case-sensitive or not.'
+    required: false
+    default: false
 
diff --git a/lib/entrypoint.sh b/lib/entrypoint.sh
index 75d15b4..cb15c21 100755
--- a/lib/entrypoint.sh
+++ b/lib/entrypoint.sh
@@ -8,8 +8,18 @@ cp /git-grep-problem-matcher.json "$matcher_path"
 
 echo "::add-matcher::git-grep-problem-matcher.json"
 
+
+case_sensitive="${1}"
+
+if [ ${case_sensitive} = false ]; then
+	case_sensitive="--ignore-case"
+else
+	unset case_sensitive
+fi
+
+
 tag=${INPUT_TERMS:=FIXME}
-result=$(git grep --no-color --line-number --extended-regexp -e "(${tag})+(:)" :^.github)
+result=$(git grep --no-color ${case_sensitive} --line-number --extended-regexp -e "(${tag})+(:)" :^.github)
 
 echo "${result}"