diff --git a/appveyor.yml b/appveyor.yml
index 899a978..d02588b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -7,10 +7,10 @@ environment:
 
 ## uncomment the following lines to allow failures on nightly julia
 ## (tests will run but not make your overall status red)
-#matrix:
-#  allow_failures:
+matrix:
+ allow_failures:
 #  - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x86/julia-latest-win32.exe"
-#  - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
+ - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
 
 branches:
   only: