diff --git a/NEWS.md b/NEWS.md
index 7793ba31b7f24..f1347a030060c 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -18,7 +18,7 @@ Command-line option changes
 
 Multi-threading changes
 -----------------------
-
+* If the `JULIA_NUM_THREADS` environment variable is set to `auto`, then the number of threads will be set to the number of CPU threads ([#38952])
 
 Build system changes
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