diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4f58ff4504b1bf6a59368698eb0f8cc37cb0d9dc..9aead4248057285e36d1747c83775d94a7c5fb81 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -36,6 +36,8 @@ test:
 deploy-snapshot:
   stage: deploy
   script:
+    - export VERSION=$(./mvnw --batch-mode --no-transfer-progress --non-recursive help:evaluate -Dexpression=project.version | grep -v "\[.*")
+    - if ! [[ $VERSION =~ .*SNAPSHOT ]]; then exit 1; fi
     - ./mvnw $MAVEN_CLI_OPTS $MAVEN_OPTS deploy -DskipTests
   tags:
     - vips-java