Replace links to archived mailing lists by links to Discourse forums
diff --git a/clang/README.txt b/clang/README.txt
index 91527b09..63842d4 100644
--- a/clang/README.txt
+++ b/clang/README.txt
@@ -19,8 +19,8 @@
 Information on the LLVM project:  http://llvm.org/
 
 If you have questions or comments about Clang, a great place to discuss them is
-on the Clang development mailing list:
-  http://lists.llvm.org/mailman/listinfo/cfe-dev
+on the Clang forums:
+  https://discourse.llvm.org/c/clang/
 
 If you find a bug in Clang, please file it in the LLVM bug tracker:
   http://llvm.org/bugs/