diff --git a/pygtk/pygtk.json b/pygtk/pygtk.json
index 5319e4b3..2f6c50bd 100644
--- a/pygtk/pygtk.json
+++ b/pygtk/pygtk.json
@@ -3,6 +3,9 @@
   "config-opts": [
     "--disable-docs"
   ],
+  "build-options": {
+    "cflags": "-Wno-error=implicit-function-declaration -Wno-error=int-conversion"
+  },
   "sources": [
     {
       "type": "archive",