1 files changed, 1 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index be0807b747..c152cf58a9 100644
--- a/NEWS
+++ b/NEWS
@@ -45,6 +45,7 @@ with all sufficient information, see the ChangeLog file.
 
   * ENV
     * Uses locale's encoding
+    * ENV.[]= raises Errno::{EINVAL,ENOMEM} etc. on failure.
 
   * Float
     * new constants: