--- a/taskcluster/scripts/misc/build-gcc-mingw32.sh
+++ b/taskcluster/scripts/misc/build-gcc-mingw32.sh
@@ -13,17 +13,17 @@ data_dir=$HOME_DIR/src/build/unix/build-
 
 . $data_dir/build-gcc.sh
 
 gcc_version=6.4.0
 gcc_ext=xz
 binutils_version=2.27
 binutils_ext=bz2
 binutils_configure_flags="--target=i686-w64-mingw32"
-mingw_version=aa6ab47929a9cac6897f38e630ce0bb88458e288
+mingw_version=8bcc70834969d34e113c5614364c4661cfa5d1be
 
 # GPG keys used to sign GCC (collected from 5.1.0, 5.4.0, 6.4.0)
 $GPG --import $data_dir/33C235A34C46AA3FFB293709A328C3A2C3C45C06.key
 $GPG --import $data_dir/7F74F97C103468EE5D750B583AB00996FC26A641.key
 # GPG key used to sign binutils
 $GPG --import $data_dir/EAF1C276A747E9ED86210CBAC3126D3B4AE55E93.key
 # GPG key used to sign GMP
 $GPG --import $data_dir/343C2FF0FBEE5EC2EDBEF399F3599FF828C67298.key