diff -purN a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
--- a/include/mbedtls/mbedtls_config.h	2023-03-27 19:05:28.000000000 +0200
+++ b/include/mbedtls/mbedtls_config.h	2023-05-29 19:15:39.917530360 +0200
@@ -1917,7 +1917,7 @@
  *
  * Uncomment this to enable pthread mutexes.
  */
-//#define MBEDTLS_THREADING_PTHREAD
+#define MBEDTLS_THREADING_PTHREAD
 
 /**
  * \def MBEDTLS_USE_PSA_CRYPTO
@@ -3312,7 +3312,7 @@
  *
  * Enable this layer to allow use of mutexes within mbed TLS
  */
-//#define MBEDTLS_THREADING_C
+#define MBEDTLS_THREADING_C
 
 /**
  * \def MBEDTLS_TIMING_C