diff --git a/scripts.d/25-gmp.sh b/scripts.d/25-gmp.sh
index 8f7b1c9..3884ce6 100755
--- a/scripts.d/25-gmp.sh
+++ b/scripts.d/25-gmp.sh
@@ -1,20 +1,16 @@
 #!/bin/bash
 
-SCRIPT_VERSION="6.2.1"
-SCRIPT_SHA512="c99be0950a1d05a0297d65641dd35b75b74466f7bf03c9e8a99895a3b2f9a0856cd17887738fa51cf7499781b65c049769271cbcb77d057d2e9f1ec52e07dd84"
-SCRIPT_URL="https://ftp.gnu.org/gnu/gmp/gmp-${SCRIPT_VERSION}.tar.xz"
+SCRIPT_REPO="https://github.com/BtbN/gmplib.git"
+SCRIPT_COMMIT="1d7f62515fc8f5109fabace9592d863417f17c37"
 
 ffbuild_enabled() {
     return 0
 }
 
-ffbuild_dockerdl() {
-    to_df "RUN retry-tool check-wget gmp.tar.xz \"$SCRIPT_URL\" \"$SCRIPT_SHA512\""
-}
-
 ffbuild_dockerbuild() {
-    tar xaf "$FFBUILD_DLDIR"/gmp.tar.xz
-    cd "gmp-$SCRIPT_VERSION"
+    cd "$FFBUILD_DLDIR/$SELF"
+
+    ./.bootstrap
 
     local myconf=(
         --prefix="$FFBUILD_PREFIX"