diff --git a/CHANGELOG b/CHANGELOG
index 330ec075046536edc1b439c0c8fed7fcda40d686..6e651d43fd85b3d865083704a32f411212b26928 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+01.08.2017:
+changes in downloadversionIRdata:
+    - OP1.2b version now online for upload and download of the IRdata
 03.11.2017:
 changes in downloadversionIRdata:
     - reduce blocks to 1 second, now editable over parameter intervalSize