diff --git a/package.json b/package.json
index 2239f61..0dcc52c 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "bower": "1.8.8",
     "eslint": "7.7.0",
     "eslint-config-google": "0.14.0",
-    "jison": "0.4.15",
+    "jison": "0.4.18",
     "jshint": "2.12.0",
     "jsonlint": "1.6.3",
     "minifier": "0.8.1",