diff --git a/package/optee-client/optee-client.hash b/package/optee-client/optee-client.hash
index 69016eae11..bb97820ab1 100644
--- a/package/optee-client/optee-client.hash
+++ b/package/optee-client/optee-client.hash
@@ -1,4 +1,4 @@
-# From https://github.com/OP-TEE/optee_client/archive/3.21.0/optee-client-3.21.0.tar.gz
-sha256  368164a539b85557d2079fa6cd839ec444869109f96de65d6569e58b0615d026  optee-client-3.21.0.tar.gz
+# From https://github.com/OP-TEE/optee_client/archive/4.0.0/optee-client-4.0.0.tar.gz
+sha256  bcdac9c3a9f2e93c64d114667cc6d1feddf9f978992cdc2d59745885f9bd8fbe  optee-client-4.0.0.tar.gz
 # Locally computed
 sha256  fda8385993f112d7ca61b88b54ba5b4cbeec7e43a0f9b317d5186703c1985e8f  LICENSE
diff --git a/package/optee-client/optee-client.mk b/package/optee-client/optee-client.mk
index 4b95842efa..99c922a171 100644
--- a/package/optee-client/optee-client.mk
+++ b/package/optee-client/optee-client.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-OPTEE_CLIENT_VERSION = 3.21.0
+OPTEE_CLIENT_VERSION = 4.0.0
 OPTEE_CLIENT_SITE = $(call github,OP-TEE,optee_client,$(OPTEE_CLIENT_VERSION))
 OPTEE_CLIENT_LICENSE = BSD-2-Clause
 OPTEE_CLIENT_LICENSE_FILES = LICENSE