diff --git a/build.sh b/build.sh
index 419c81a..6351f9e 100755
--- a/build.sh
+++ b/build.sh
@@ -9,6 +9,7 @@ then
 else
     set +e
     docker pull $BTCPAYGEN_DOCKER_IMAGE
+    docker rmi $(docker images btcpayserver/docker-compose-generator --format "{{.Tag}};{{.ID}}" | grep "^<none>" | cut -f2 -d ';')
     set -e
 fi