diff --git a/static/verify.sh b/static/verify.sh
index 06ef299..d834887 100755
--- a/static/verify.sh
+++ b/static/verify.sh
@@ -9,6 +9,7 @@ curl \
   --data language=ECMASCRIPT5 \
   --data warning_level=verbose \
   --data externs_url=https://www.cosmopolite.org/externs/cosmopolite.js \
+  --data externs_url=http://www.google.com/uds/modules/gviz/gviz-api.js \
   --data-urlencode "js_code@babystats.js" \
   http://closure-compiler.appspot.com/compile
 echo