diff --git a/mongoose.h b/mongoose.h
index dfe53266d5ec469f668954b9074eb4b84afeb862..3ffa9dbf66176fc8060f70a627f6791244a54db7 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -20,7 +20,7 @@
 #ifndef CS_MONGOOSE_SRC_COMMON_H_
 #define CS_MONGOOSE_SRC_COMMON_H_
 
-#define MG_VERSION "6.3"
+#define MG_VERSION "6.4"
 
 /* Local tweaks, applied before any of Mongoose's own headers. */
 #ifdef MG_LOCALS