diff --git a/components/coap/libcoap b/components/coap/libcoap
index 9b6451c365..3aa11612c1 160000
--- a/components/coap/libcoap
+++ b/components/coap/libcoap
@@ -1 +1 @@
-Subproject commit 9b6451c3654bc1f625e36c87f018c2da34bea5e6
+Subproject commit 3aa11612c143c9734d72022720f33e12506f7a2c
diff --git a/tools/test_apps/system/build_test/sdkconfig.ci.client_only_mbedtls b/tools/test_apps/system/build_test/sdkconfig.ci.client_only_mbedtls
new file mode 100644
index 0000000000..5430aef3bc
--- /dev/null
+++ b/tools/test_apps/system/build_test/sdkconfig.ci.client_only_mbedtls
@@ -0,0 +1 @@
+CONFIG_MBEDTLS_TLS_CLIENT_ONLY=y