diff --git a/release_notes.md b/release_notes.md
index 2a63db6ec..a89c2b60d 100644
--- a/release_notes.md
+++ b/release_notes.md
@@ -3,11 +3,12 @@
 ### features
 - Add session delay info during registration of Bpod session
 - Add detailed criteria info to behaviour plots
-- Add column filtering, sorting and color-coding of values to metrics table of 
+- Add column filtering, sorting and color-coding of values to metrics table of
   task_qc_viewer
 
 ### Bugfixes
 - Read in updated json keys from task settings to establish ready4recording
+- Handle extraction of sessions with dud spacers
 
 ## Release Note 3.1.0