diff --git a/build/Tasks/CodeCoverage.cs b/build/Tasks/CodeCoverage.cs
index c5f0c6794b..32fbd2c29e 100644
--- a/build/Tasks/CodeCoverage.cs
+++ b/build/Tasks/CodeCoverage.cs
@@ -59,7 +59,12 @@ public override void Run(Context context)
                 {
                     var settings = new CodecovSettings
                     {
-                        Files = new [] { coverageFile.MakeAbsolute(context.Environment).FullPath }
+                        Files = new [] { coverageFile.MakeAbsolute(context.Environment).FullPath },
+                        EnvironmentVariables = new Dictionary<string, string> {
+                            {
+                                "APPVEYOR_BUILD_VERSION", context.EnvironmentVariable("APPVEYOR_BUILD_VERSION")
+                            }
+                        }
                     };
 
                     context.Codecov(settings);