diff --git a/appveyor.yml b/appveyor.yml
index b76c65128a..1e13b345bc 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,7 +5,7 @@ init:
 # Test against these versions of Node.js.
 environment:
   matrix:
-    - nodejs_version: "6"
+    - nodejs_version: "6.12.1"
     - nodejs_version: "8"
 
 matrix: