diff --git a/meta-arm/recipes-security/optee-ftpm/optee-ftpm_git.bb b/meta-arm/recipes-security/optee-ftpm/optee-ftpm_git.bb
index 8dfbad7b..df1f3bdd 100644
--- a/meta-arm/recipes-security/optee-ftpm/optee-ftpm_git.bb
+++ b/meta-arm/recipes-security/optee-ftpm/optee-ftpm_git.bb
@@ -20,7 +20,7 @@ DEPENDS = "python3-pyelftools-native optee-os-tadevkit python3-cryptography-nati
 
 FTPM_UUID="bc50d971-d4c9-42c4-82cb-343fb7f37896"
 
-SRC_URI = "gitsm://github.com/Microsoft/ms-tpm-20-ref;branch=master;protocol=https \
+SRC_URI = "gitsm://github.com/Microsoft/ms-tpm-20-ref;branch=main;protocol=https \
            file://0001-add-enum-to-ta-flags.patch"
 
 SRCREV = "d638536d0fe01acd5e39ffa1bd100b3da82d92c7"