diff --git a/test/test.py b/test/test.py
index 1e00ccc62..4dc6ca8a9 100644
--- a/test/test.py
+++ b/test/test.py
@@ -64,6 +64,7 @@ MIMEs = {
     '.svg': 'image/svg+xml',
     '.pdf': 'application/pdf',
     '.xhtml': 'application/xhtml+xml',
+    '.gif': 'image/gif',
     '.ico': 'image/x-icon',
     '.png': 'image/png',
     '.log': 'text/plain'