diff --git a/appveyor.yml b/appveyor.yml
index 7b183f8cf..11379c838 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,6 +9,7 @@ install:
   - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
   - rustc -vV
   - cargo -vV
+  - cargo update
 
 build: false