diff --git a/app/prj.conf b/app/prj.conf
index 3d9bbf56..95699168 100644
--- a/app/prj.conf
+++ b/app/prj.conf
@@ -120,7 +120,7 @@ CONFIG_BUILD_S1_VARIANT=y
 CONFIG_COAP_CLIENT_THREAD_PRIORITY=0
 CONFIG_COAP_CLIENT_BLOCK_SIZE=1024
 CONFIG_COAP_CLIENT_MESSAGE_SIZE=1024
-CONFIG_COAP_CLIENT_STACK_SIZE=1792
+CONFIG_COAP_CLIENT_STACK_SIZE=2048
 CONFIG_COAP_EXTENDED_OPTIONS_LEN_VALUE=192
 
 # nRF Cloud
diff --git a/tests/on_target/tests/conftest.py b/tests/on_target/tests/conftest.py
index 0fdbb4d1..11c5d75c 100644
--- a/tests/on_target/tests/conftest.py
+++ b/tests/on_target/tests/conftest.py
@@ -16,7 +16,7 @@
 
 logger = get_logger()
 
-UART_TIMEOUT = 60 * 15
+UART_TIMEOUT = 60 * 30
 
 SEGGER = os.getenv('SEGGER')
 UART_ID = os.getenv('UART_ID', SEGGER)