diff --git a/release-notes/CREDITS-2.x b/release-notes/CREDITS-2.x
index b0168b67..9f4a91c8 100644
--- a/release-notes/CREDITS-2.x
+++ b/release-notes/CREDITS-2.x
@@ -92,7 +92,9 @@ PJ Fanning (@pjfanning)
   block using `LRUMap` _writers instance
  (2.14.2)
 * Contributed #184: Use `ReentrantLock`s instead of synchronized blocks
- (2.18.0)
+ (2.17.1)
+* Contributed #187: Mark variables as volatile for safe concurrent access
+ (2.17.1)
 
 Steven Schlansker (@stevenschlansker)
 
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index 128964c1..a7aa8bb4 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -14,6 +14,8 @@ Sub-modules:
 
 #184: Use `ReentrantLock`s instead of synchronized blocks
  (contributed by @pjfanning)
+#187: Mark variables as volatile for safe concurrent access
+ (contributed by @pjfanning)
 
 2.17.0 (12-Mar-2024)