diff --git a/Dockerfile b/Dockerfile
index 16a1eb6..b3260cf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,7 +30,7 @@ COPY src/ ${BUILD_PATH}/src/
 
 # Install dependencies and build the application source
 # (mount the NPM credentials so we can install private packages)
-RUN --mount-type=secret,id=npmrc,target=/root/.npmrc npm ci
+RUN --mount=type=secret,id=npmrc,target=/root/.npmrc npm ci
 RUN npm run tsc
 
 # Remove any dev dependencies now that the app is built