diff --git a/appveyor.yml b/appveyor.yml
index a19cae91c2..8ccf45e661 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -17,7 +17,7 @@ environment:
       DUB_VERSION:                 v1.7.2
     - APPVEYOR_JOB_ARCH:           x86
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      LLVM_VERSION:                6.0.0
+      LLVM_VERSION:                5.0.1
       HOST_LDC_VERSION:            1.8.0
       DUB_VERSION:                 v1.7.2