diff --git a/docker/Dockerfile.ngen b/docker/Dockerfile.ngen
index cad3530..9846264 100644
--- a/docker/Dockerfile.ngen
+++ b/docker/Dockerfile.ngen
@@ -4,7 +4,7 @@
 ARG NGEN_BUILD_CONFIG_TYPE="Release" \
     REPO_URL=https://github.com/NOAA-OWP/ngen.git \
     BRANCH=master \
-    COMMIT \
+    COMMIT=$commit \
     WORKDIR=/ngen