diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 94486f2a..a81d41b4 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 ## 1.0.0
+### 1.0.0-rc.125
+This is an UNSTABLE release. This version adds scalign and merging. These are experimental at the moment, and should not be used for production analysis.
+If things go wrong with analysis, it is better to revert to 1.0.0-rc.124.
+
+* jfjoch_broker: Improve logic on switching on/off spot finding
+* jfjoch_broker: Increase maximum spot count for FFBIDX to 65536
+* jfjoch_broker: Increase default maximum unit cell for FFT to 500 A (could have performance impact, TBD)
+* jfjoch_process: Add scalign and merging functionality - program is experimental at the moment and should not be used for production analysis
+* jfjoch_viewer: Display partiality and reciprocal Lorentz-polarization correction for each reflection
+* jfjoch_writer: Save more information about each reflection
+
 ### 1.0.0-rc.124
 This is an UNSTABLE release. This version significantly rewrites code to predict reflection position and integrate them, 
 especially in case of rotation crystallography. If things go wrong with analysis, it is better to revert to 1.0.0-rc.123.