diff --git a/dtool/src/parser-inc/Sources.pp b/dtool/src/parser-inc/Sources.pp
index 08f2822805..79e12ee0c0 100644
--- a/dtool/src/parser-inc/Sources.pp
+++ b/dtool/src/parser-inc/Sources.pp
@@ -1,3 +1,3 @@
 #define INSTALL_PARSER_INC \
     deque iostream list map pair queue set stack stdtypedefs.h \
-    string vector windows.h zlib.h md5.h files.h
+    string vector windows.h zlib.h md5.h files.h hex.h