Version bump.
diff --git a/src/njs.h b/src/njs.h
index 1bfc915..42261a6 100644
--- a/src/njs.h
+++ b/src/njs.h
@@ -11,7 +11,7 @@
 
 #include <njs_auto_config.h>
 
-#define NJS_VERSION                 "0.5.0"
+#define NJS_VERSION                 "0.5.1"
 
 
 #include <unistd.h>                 /* STDOUT_FILENO, STDERR_FILENO */