diff --git a/run-remote b/run-remote
index 6c551d2..6a35c97 100755
--- a/run-remote
+++ b/run-remote
@@ -9,6 +9,12 @@ shift
 DIR="/tmp/docker-devtools/infrastructure/${IMAGE}"
 mkdir -p "${DIR}"
 
+# Rebuild the docker image to make sure it's up to date.
+(
+  cd "${IMAGE}"
+  ./build.sh
+)
+
 # Save the docker image, transfer it and the per-image run script to remote.
 docker save -o "${DIR}/image.tar" "${IMAGE}"
 cp "${IMAGE}/run.sh" "${DIR}"