websocket_connect undefined reference to 'mbedtls_sha1' ncs v2.8.0

Hi, I'm upgrading the ncs version of my project from v2.7.0 to v2.8.0 and I'm no longer able to compile the project due to a linker error because the websocket_connect function using mbedtls_sha1:

zephyr/subsys/net/lib/websocket/libwebsocket_client.a(websocket.c.obj): in function `websocket_connect':
C:/ncs/v2.9.0/zephyr/subsys/net/lib/websocket/websocket.c:282: undefined reference to `mbedtls_sha1
C:/ncs/v2.9.0/zephyr/subsys/net/lib/websocket/websocket.c:346: undefined reference to `mbedtls_sha1

Not sure what I'm missing here, any help appreciated. 

attaching prj.conf:

# Memory
CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_MAIN_STACK_SIZE=16384
CONFIG_NET_CONNECTION_MANAGER_MONITOR_STACK_SIZE=1024
# CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096
# CONFIG_NET_TCP_WORKQ_STACK_SIZE=4096
CONFIG_NET_MGMT_EVENT_STACK_SIZE=4096
# CONFIG_IDLE_STACK_SIZE=1024

# Logging
CONFIG_LOG=y
# CONFIG_LOG_MODE_MINIMAL=y  
CONFIG_NET_LOG=y
CONFIG_LOG_MODE_IMMEDIATE=y
# CONFIG_NVS_LOG_LEVEL_DBG=y
# CONFIG_NRF_MODEM_LIB_TRACE=y
# CONFIG_MODEM_LOG_LEVEL_DBG=y
# CONFIG_NET_SOCKETS_LOG_LEVEL_DBG=y
# CONFIG_NET_HTTP_LOG_LEVEL_DBG=y
# CONFIG_NET_WEBSOCKET_LOG_LEVEL_DBG=y
# CONFIG_NET_CONTEXT_LOG_LEVEL_DBG=y
# CONFIG_NET_TCP_LOG_LEVEL_DBG=y
# CONFIG_LOG_BACKEND_UART=y
CONFIG_NVS_LOG_LEVEL_ERR=y # This one likes to be the center of attention for some reason. Setting to ERR to shut up...

# Modem
CONFIG_MODEM=y
CONFIG_MODEM_INFO=y

# Network
CONFIG_NET_MGMT=y
CONFIG_NET_MGMT_EVENT=y
CONFIG_NET_MGMT_EVENT_INFO=y
CONFIG_NETWORKING=y
CONFIG_NET_TCP=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y
CONFIG_NET_IPV4=y
CONFIG_NET_CONNECTION_MANAGER=y
CONFIG_NET_BUF_DATA_SIZE=4096
# CONFIG_LOG_BUFFER_SIZE=6000
CONFIG_NET_STATISTICS=y

# Websocket
CONFIG_WEBSOCKET_CLIENT=y
CONFIG_MQTT_LIB=y
CONFIG_MQTT_LIB_WEBSOCKET=y
CONFIG_MBEDTLS_SHA1_C=y

# UART
CONFIG_UART_ASYNC_API=y
CONFIG_UART_3_ASYNC=y
CONFIG_UART_3_INTERRUPT_DRIVEN=n
CONFIG_UART_3_NRF_HW_ASYNC=y
CONFIG_UART_3_NRF_HW_ASYNC_TIMER=2

# Reboot
CONFIG_REBOOT=y

# HW id library
CONFIG_HW_ID_LIBRARY=y
CONFIG_HW_ID_LIBRARY_SOURCE_DEVICE_ID=y

# Flash Storage
CONFIG_FLASH=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_MPU_ALLOW_FLASH_WRITE=y
CONFIG_NVS=y

# Bluejay LTE
CONFIG_BJLTE_CACHE_LOGIN_SESSION=y


## DEBUGGING ##

# Debug symbols
# CONFIG_NO_OPTIMIZATIONS=y

# Thread analyzer (Enable all of this stuff for debugging if you encounter a stack overflow)
# CONFIG_THREAD_ANALYZER=y
# CONFIG_THREAD_ANALYZER_USE_LOG=y
# CONFIG_THREAD_ANALYZER_AUTO=y
# CONFIG_THREAD_NAME=y

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