diff --git a/SPECS/mingw-gcc.spec b/SPECS/mingw-gcc.spec
index 396647a..0b12caa 100644
--- a/SPECS/mingw-gcc.spec
+++ b/SPECS/mingw-gcc.spec
@@ -5,7 +5,7 @@
 %undefine _auto_set_build_flags
 
 # NOTE See mingw-filesystem/README.md for the build steps!
-%global bootstrap 0
+%global bootstrap 1
 
 %if 0%{?rhel} > 8
 %global build_isl 0