diff --git a/meta-digi-arm/dynamic-layers/stm-st-stm32mp/recipes-security/optee/optee-os-stm32mp_%.bbappend b/meta-digi-arm/dynamic-layers/stm-st-stm32mp/recipes-security/optee/optee-os-stm32mp_%.bbappend
index bae442ca4..3963f0665 100644
--- a/meta-digi-arm/dynamic-layers/stm-st-stm32mp/recipes-security/optee/optee-os-stm32mp_%.bbappend
+++ b/meta-digi-arm/dynamic-layers/stm-st-stm32mp/recipes-security/optee/optee-os-stm32mp_%.bbappend
@@ -14,3 +14,6 @@ SRC_URI = " \
     ${OPTEE_GIT_URI};branch=${SRCBRANCH};name=os \
     file://fonts.tar.gz;subdir=git;name=fonts \
 "
+
+# Enable OTP write support
+EXTRA_OEMAKE += "CFG_STM32_BSEC_WRITE=y"