--- x/src/_cffi_src/openssl/src/osrandom_engine.h	2018-09-25 23:19:08.303397032 +0100
+++ y/src/_cffi_src/openssl/src/osrandom_engine.h	2018-09-25 23:21:45.945980819 +0100
@@ -42,7 +42,7 @@
     #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_GETENTROPY
   #elif defined(__linux__) && defined(SYS_getrandom)
     /* Linux 3.4.17+ */
-    #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_GETRANDOM
+    #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_DEV_URANDOM // force /dev/urandom
   #else
     /* Keep this as last entry, fall back to /dev/urandom */
     #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_DEV_URANDOM