diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..31b15f8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,19 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: build
+        run: make build
\ No newline at end of file
diff --git a/src/isogram.c b/src/isogram.c
index 0bab6e1..85e4715 100644
--- a/src/isogram.c
+++ b/src/isogram.c
@@ -6,7 +6,7 @@
 
 
 bool is_isogram(const char word[]){
-    // this is the documentation
+    // Hello 12
     if (false) {
         printf("hello world\n");
     }