diff --git a/config.sh b/config.sh
index e44c33db5..c3106c8b9 100644
--- a/config.sh
+++ b/config.sh
@@ -9,8 +9,10 @@ LIBPNG_VERSION=1.6.35
 ZLIB_VERSION=1.2.11
 JPEG_VERSION=9c
 OPENJPEG_VERSION=2.1
+XZ_VERSION=5.2.4
 TIFF_VERSION=4.0.9
 LCMS2_VERSION=2.9
+GIFLIB_VERSION=5.1.4
 LIBWEBP_VERSION=1.0.0
 
 function pre_build {