1 files changed, 4 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index f7e9fa7..9ba754a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -344,6 +344,10 @@ IDLE
 Tests
 -----
 
+- Issue #22166:  with the assistance of a new internal _codecs._forget_codec
+  helping function, test_codecs now clears the encoding caches to avoid the
+  appearance of a reference leak
+
 - Issue #22236: Tkinter tests now don't reuse default root window.  New root
   window is created for every test class.