diff --git a/src/config.h b/src/config.h
index 6079d5c..78ce510 100644
--- a/src/config.h
+++ b/src/config.h
@@ -142,7 +142,7 @@
 
 #define FNGPRINT    0
 #define CERTIFICATE 1
-#define IASLIB      "2.1.0-RC5"
+#define IASLIB      "2.1.0-RC5.1"
 
 // define storage types (internal use)
 #define EEP_OLD     0