diff --git a/.changeset/fix-dockerfile-install-git.md b/.changeset/fix-dockerfile-install-git.md
new file mode 100644
index 000000000..e62af4789
--- /dev/null
+++ b/.changeset/fix-dockerfile-install-git.md
@@ -0,0 +1,5 @@
+---
+"lingo.dev": patch
+---
+
+Install `git` in the `lingodotdev/ci-action` Docker image so `lingo.dev ci` works in runners that do not already provide it (e.g. GitLab CI using the image directly).
diff --git a/Dockerfile b/Dockerfile
index 9dc77c540..c8c9d431a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,9 @@
 FROM node:20.12.2-alpine
 
+# git is required by `lingo.dev ci` (configureGit) and is not included in the
+# node:alpine base image.
+RUN apk add --no-cache git
+
 # Run the Node.js / TypeScript application
 ENTRYPOINT ["sh", "-c", "npx lingo.dev@latest ci \
   --api-key \"$LINGODOTDEV_API_KEY\" \