diff --git a/deps/stb/stb_vorbis.h b/deps/stb/stb_vorbis.h
index d8a9adfac2..90b9b066af 100644
--- a/deps/stb/stb_vorbis.h
+++ b/deps/stb/stb_vorbis.h
@@ -51,6 +51,8 @@
 #ifndef STB_VORBIS_INCLUDE_STB_VORBIS_H
 #define STB_VORBIS_INCLUDE_STB_VORBIS_H
 
+#include <assert.h>
+
 #if defined(STB_VORBIS_NO_CRT) && !defined(STB_VORBIS_NO_STDIO)
 #define STB_VORBIS_NO_STDIO 1
 #endif