diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index 34f2f110909c3f68527d0f2e21ae2d1852149716..16736ad270c5c7e7141d781b476ab60a52386c48 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -14,6 +14,7 @@
 - cta/CTA#1031 Fix Warning in updateDriveStatus
 - cta/CTA#1032 cta-admin dr ls crashes the frontend if executed during an archive/retrieve
 - cta/CTA#996  Removes PARALLEL from migration scripts
+- cta/CTA#991  Drive is not put down if the device file is removed while cta-taped is running and before a data transfer
 
 # v4.2-3