diff --git a/CHANGELOG.md b/CHANGELOG.md
index 69936faf..cccba7b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -34,6 +34,9 @@ list yields a list of all related PRs for each release.
 - Add Syrlinks and TMP devices to Software by default
 - Update GPS Linux Hyperion Handler to use socket interface. Still allows switching
   back to SHM interface, but the SHM interface is a possible cause of SW crashes
+- Updated code for changed FSFW HAL GPIO API: `readGpio` prototype has changed
+  PR: https://egit.irs.uni-stuttgart.de/eive/eive-obsw/pulls/240 and
+  https://egit.irs.uni-stuttgart.de/eive/fsfw/pulls/76
 
 ### GPS