diff --git a/appveyor.yml b/appveyor.yml
index f4894888..c0270731 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -98,6 +98,8 @@ for:
         mkdir -p amxmodx
 
         ../support/checkout-deps.sh
+        
+        brew install ca-certificates
 
         brew install nasm