diff --git a/ci/external-gccarm.yml b/ci/external-gccarm.yml
index 84c2cfa2..2af8b5e8 100644
--- a/ci/external-gccarm.yml
+++ b/ci/external-gccarm.yml
@@ -5,5 +5,4 @@ local_conf_header:
   cc: |
     SKIP_RECIPE[gcc-cross-arm] = "Using external toolchain"
     TCMODE = "external-arm"
-    PREFERRED_VERSION_external-arm-toolchain = "10.3-2021.07"
     EXTERNAL_TOOLCHAIN = "${TOPDIR}/toolchains/${TARGET_ARCH}"