appveyor.patch

diff --git a/shell/bootstrap-ocaml.sh b/shell/bootstrap-ocaml.sh
index e36e07b5..65d05ac1 100755
--- a/shell/bootstrap-ocaml.sh
+++ b/shell/bootstrap-ocaml.sh
@@ -34,6 +34,11 @@ fi
 
 if [ ${GEN_CONFIG_ONLY} -eq 0 ] ; then
   tar -zxf ${V}.tar.gz
+  cd ${V}
+  ${CURL} https://github.com/ocaml/ocaml/commit/26ebd64227e99a125bb0530bdfdfdb2782792d56.patch
+  # OCaml PR#9939 for mingw-w64 8.0.0 support
+  patch -p1 -i 26ebd64227e99a125bb0530bdfdfdb2782792d56.patch
+  cd ..
 else
   mkdir -p ${V}
 fi