diff --git a/crup-runner.sh b/crup-runner.sh
index c8f5822c2..50c1d06b5 100755
--- a/crup-runner.sh
+++ b/crup-runner.sh
@@ -112,7 +112,7 @@ if [ "$solution" = "$1" ]; then
 else
   submodule="${1#*/}"
   echo "[$solution] updating $submodule"
-  "$GIT_EXE" submodule update --quiet "$submodule" |
+  "$GIT_EXE" submodule update --recursive --quiet "$submodule" |
   ( grep -v '^Skipping submodule' || true ) | sed "s|^|[$1] |g"
   status=$?
   if [ "$status" -ne "0" ]; then