NEWS.md: mention "Freeze Regexp literals" [Feature #8948]

1 files changed, 6 insertions, 0 deletions

diff --git a/NEWS.md b/NEWS.md
index 0bc98be894..6f8e8a01f9 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -26,6 +26,12 @@ Hash::
 
 ### Compatibility issues (excluding feature bug fixes)
 
+* Regexp literals are frozen [Feature #8948] [Feature #16377]
+
+```
+/foo/.frozen? #=> true
+```
+
 ### Stdlib compatibility issues (excluding feature bug fixes)
 
 ### C API updates