diff --git a/packages/ocaml-windows64/ocaml-windows64.5.1.1/files/patches/configure.patch b/packages/ocaml-windows64/ocaml-windows64.5.1.1/files/patches/configure.patch
index b727b6aa..5cbc8370 100644
--- a/packages/ocaml-windows64/ocaml-windows64.5.1.1/files/patches/configure.patch
+++ b/packages/ocaml-windows64/ocaml-windows64.5.1.1/files/patches/configure.patch
@@ -1,45 +1,43 @@
---- ocaml-5.1.1/configure.orig	2024-02-25 18:21:29.787786010 +0000
-+++ ocaml-5.1.1/configure	2024-02-25 18:21:31.795786011 +0000
-@@ -13947,6 +13947,14 @@
+--- a/configure.orig	2024-02-27 21:22:55.384420013 +0000
++++ a/configure	2024-02-27 21:19:10.686935006 +0000
+@@ -14274,17 +14274,9 @@
 
 
 
-+  flexlink_where_cmd_prefix=''
-+  case $build in #(
-+  *-w64-mingw32*|*-pc-windows) :
-+    flexlink_where_cmd_prefix="cmd /c" ;; #(
-+  *) :
-+     ;;
-+esac
-+
-   if test -n "$flexlink" && test -z "$flexdir"
+-    flexlink_exec_cmd=''
+-    case $build in #(
+-  *-w64-mingw32*|*-pc-windows) :
+-    flexlink_exec_cmd=cmd /c ;; #(
+-  *) :
+-     ;;
+-esac
+-
+     case $host in #(
+   *-w64-mingw32*|*-pc-windows) :
+-    flexlink_where="$($flexlink_exec_cmd "$flexlink" -where 2>/dev/null)"
++    flexlink_where="$(cmd /c "$flexlink" -where 2>/dev/null)"
+         if test -z "$flexlink_where"
  then :
+   as_fn_error $? "$flexlink is not executable from a native Win32 process" "$LINENO" 5
+opam@7bc71e662445:/tmp/ocaml$ diff -urN configure configure.new
+--- configure	2024-02-27 21:22:55.384420013 +0000
++++ configure.new	2024-02-27 21:19:10.686935006 +0000
+@@ -14274,17 +14274,9 @@
 
-@@ -14024,7 +14032,7 @@
 
+
+-    flexlink_exec_cmd=''
+-    case $build in #(
+-  *-w64-mingw32*|*-pc-windows) :
+-    flexlink_exec_cmd=cmd /c ;; #(
+-  *) :
+-     ;;
+-esac
+-
      case $host in #(
    *-w64-mingw32*|*-pc-windows) :
--    flexlink_where="$(cmd /c "$flexlink" -where 2>/dev/null)"
-+    flexlink_where="$($flexlink_where_cmd_prefix "$flexlink" -where 2>/dev/null)"
-       if test -z "$flexlink_where"
+-    flexlink_where="$($flexlink_exec_cmd "$flexlink" -where 2>/dev/null)"
++    flexlink_where="$(cmd /c "$flexlink" -where 2>/dev/null)"
+         if test -z "$flexlink_where"
  then :
    as_fn_error $? "$flexlink is not executable from a native Win32 process" "$LINENO" 5
-@@ -18358,9 +18366,17 @@
-
- ## Determine how to link with the POSIX threads library
-
-+extra_mingw_pthread_lib=''
-+case $build in #(
-+  *-*-mingw32*) :
-+    extra_mingw_pthread_lib="-lgcc_eh" ;; #(
-+  *) :
-+     ;;
-+esac
-+
- case $host in #(
-   *-*-mingw32*) :
--    PTHREAD_LIBS="-l:libpthread.a -lgcc_eh" ;; #(
-+    PTHREAD_LIBS="-l:libpthread.a $extra_mingw_pthread_lib" ;; #(
-   *-pc-windows) :
-     PTHREAD_LIBS="-l:libpthread.lib" ;; #(
-   *) :
diff --git a/packages/ocaml-windows64/ocaml-windows64.5.1.1/opam b/packages/ocaml-windows64/ocaml-windows64.5.1.1/opam
index 1bdd4f53..45b54f94 100644
--- a/packages/ocaml-windows64/ocaml-windows64.5.1.1/opam
+++ b/packages/ocaml-windows64/ocaml-windows64.5.1.1/opam
@@ -32,7 +32,7 @@ extra-files: [
   ["build.sh" "md5=60fbd2b09fecf1e886605f38e81922ed"]
   ["install.sh" "md5=771227318703c168f819281d3c051b29"]
   ["patches/ostype-fix.patch" "md5=57404edca01e9a353f28d3b3c0139f55"]
-  ["patches/configure.patch" "md5=668bfb4f3fccd959daa553f70b28e803"]
+  ["patches/configure.patch" "md5=31e9d8c2a8af36a563eddc3ab307725d"]
 ]
 url {
   src: "https://github.com/ocaml/ocaml/archive/5.1.1.tar.gz"