diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 77e8bbd..988e3c3 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -31,7 +31,7 @@
 SKIPPYTHON=1
 
 # GCC toolchain version numbers
-GMP_VERSION=6.0.0
+GMP_VERSION=6.1.0
 MPFR_VERSION=3.1.2
 MPC_VERSION=1.0.3
 LIBELF_VERSION=0.8.13
@@ -46,7 +46,7 @@
 CLANG_VERSION=3.6.1
 
 # GCC toolchain archive locations
-GMP_ARCHIVE="http://ftpmirror.gnu.org/gmp/gmp-${GMP_VERSION}a.tar.bz2"
+GMP_ARCHIVE="http://ftpmirror.gnu.org/gmp/gmp-${GMP_VERSION}.tar.bz2"
 MPFR_ARCHIVE="http://ftpmirror.gnu.org/mpfr/mpfr-${MPFR_VERSION}.tar.bz2"
 MPC_ARCHIVE="http://ftpmirror.gnu.org/mpc/mpc-${MPC_VERSION}.tar.gz"
 LIBELF_ARCHIVE="http://www.mr511.de/software/libelf-${LIBELF_VERSION}.tar.gz"
diff --git a/util/crossgcc/sum/gmp-6.0.0a.tar.bz2.cksum b/util/crossgcc/sum/gmp-6.0.0a.tar.bz2.cksum
deleted file mode 100644
index 67d60bf..0000000
--- a/util/crossgcc/sum/gmp-6.0.0a.tar.bz2.cksum
+++ /dev/null
@@ -1 +0,0 @@
-360802e3541a3da08ab4b55268c80f799939fddc  tarballs/gmp-6.0.0a.tar.bz2
diff --git a/util/crossgcc/sum/gmp-6.1.0.tar.bz2.cksum b/util/crossgcc/sum/gmp-6.1.0.tar.bz2.cksum
new file mode 100644
index 0000000..06db257
--- /dev/null
+++ b/util/crossgcc/sum/gmp-6.1.0.tar.bz2.cksum
@@ -0,0 +1 @@
+db38c7b67f8eea9f2e5b8a48d219165b2fdab11f  tarballs/gmp-6.1.0.tar.bz2