diff --git a/scripts/custom-docker-build b/scripts/custom-docker-build
index c8c1a5c..a975f3d 100755
--- a/scripts/custom-docker-build
+++ b/scripts/custom-docker-build
@@ -38,8 +38,8 @@ function print_git_args() {
             GIT_DOWNLOAD_SHA256=626e319f8a24fc0866167ea5f6bf3e2f38f69d6cb2e59e150f13709ca3ebf301
             ;;
         2.13)
-            GIT_VERSION=2.13.0
-            GIT_DOWNLOAD_SHA256=9f2fa8040ebafc0c2caae4a9e2cb385c6f16c0525bcb0fbd84938bc796372e80
+            GIT_VERSION=2.13.6
+            GIT_DOWNLOAD_SHA256=cb53e6b388d8d19189933366c1fe5c1ca500e8b227b9e707af39c3d879e41015
             ;;
         *) echo "Unknown git version $1"; exit 1;
     esac