diff --git a/src/sist.h b/src/sist.h
index 894f637..cbcd150 100644
--- a/src/sist.h
+++ b/src/sist.h
@@ -56,7 +56,7 @@ static const char *const Version = VERSION;
 #define SIST_PLATFORM unknown
 #endif
 
-#define EXPECTED_MONGOOSE_VERSION "7.6"
+#define EXPECTED_MONGOOSE_VERSION "7.7"
 
 #define Q(x) #x
 #define QUOTE(x) Q(x)