diff --git a/app/sysbuild/mcuboot/prj.conf b/app/sysbuild/mcuboot/prj.conf
index d83536a..b9e6ce8 100644
--- a/app/sysbuild/mcuboot/prj.conf
+++ b/app/sysbuild/mcuboot/prj.conf
@@ -7,11 +7,9 @@ CONFIG_FLASH=y
 CONFIG_PM=n
 
 CONFIG_CBPRINTF_NANO=y
-CONFIG_MINIMAL_LIBC=y
+CONFIG_PICOLIBC=y
 
 CONFIG_LOG=y
 CONFIG_LOG_MODE_MINIMAL=y
 CONFIG_LOG_DEFAULT_LEVEL=0
 CONFIG_MCUBOOT_LOG_LEVEL_INF=y
-
-CONFIG_MBEDTLS_CFG_FILE="mcuboot-mbedtls-cfg.h"