diff --git a/src/test_driver/nrfconnect/prj.conf b/src/test_driver/nrfconnect/prj.conf
index 48d43fd75f..a02c0b2117 100644
--- a/src/test_driver/nrfconnect/prj.conf
+++ b/src/test_driver/nrfconnect/prj.conf
@@ -40,9 +40,11 @@ CONFIG_MBEDTLS=y
 CONFIG_MBEDTLS_ENABLE_HEAP=y
 CONFIG_MBEDTLS_HEAP_SIZE=65536
 CONFIG_MBEDTLS_SSL_MAX_CONTENT_LEN=768
+CONFIG_MBEDTLS_PSA_KEY_SLOT_COUNT=64
 CONFIG_MBEDTLS_USER_CONFIG_ENABLE=y
 CONFIG_MBEDTLS_USER_CONFIG_FILE="app_mbedtls_config.h"
 CONFIG_MBEDTLS_ENTROPY_POLL_ZEPHYR=y
+CONFIG_MBEDTLS_ENTROPY_C=y
 CONFIG_MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED=y
 CONFIG_MBEDTLS_PSA_CRYPTO_C=y
 CONFIG_MBEDTLS_MEMORY_DEBUG=y