diff --git a/Makefile.am b/Makefile.am
index b72f54ff29..7739acf1b9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -50,6 +50,7 @@ pkgconfig_DATA = protobuf.pc protobuf-lite.pc
 
 csharp_EXTRA_DIST=                                                           \
   global.json                                                                \
+  csharp/.editorconfig                                                       \
   csharp/.gitignore                                                          \
   csharp/CHANGES.txt                                                         \
   csharp/Google.Protobuf.Tools.targets                                       \