diff --git a/slsSupportLib/include/versionAPI.h b/slsSupportLib/include/versionAPI.h
index d17c29908..60b5d2a3f 100644
--- a/slsSupportLib/include/versionAPI.h
+++ b/slsSupportLib/include/versionAPI.h
@@ -7,4 +7,4 @@
 #define APIGUI 0x190723
 #define APIJUNGFRAU 0x190730
 #define APIEIGER 0x190806
-#define APICTB 0x190820
+#define APICTB 0x190821