diff --git a/src/Microsoft.AspNetCore.StaticFiles/FileExtensionContentTypeProvider.cs b/src/Microsoft.AspNetCore.StaticFiles/FileExtensionContentTypeProvider.cs
index f2e8f1b788..ea5775c73e 100644
--- a/src/Microsoft.AspNetCore.StaticFiles/FileExtensionContentTypeProvider.cs
+++ b/src/Microsoft.AspNetCore.StaticFiles/FileExtensionContentTypeProvider.cs
@@ -331,7 +331,8 @@ namespace Microsoft.AspNetCore.StaticFiles
                 { ".vsto", "application/x-ms-vsto" },
                 { ".vsw", "application/vnd.visio" },
                 { ".vsx", "application/vnd.visio" },
-                { ".vtx", "application/vnd.visio" },
+                { ".vtx", "application/vnd.visio" },                
+                { ".wasm", "application/wasm" },
                 { ".wav", "audio/wav" },
                 { ".wax", "audio/x-ms-wax" },
                 { ".wbmp", "image/vnd.wap.wbmp" },
@@ -456,4 +457,4 @@ namespace Microsoft.AspNetCore.StaticFiles
             return path.Substring(index);
         }
     }
-}
\ No newline at end of file
+}