diff --git a/CMakeLists.txt b/CMakeLists.txt
index d8084de8e912..cf9c390c3da2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -445,6 +445,8 @@ if(CMAKE_USE_OPENSSL)
   check_symbol_exists(RAND_status "${CURL_INCLUDES}" HAVE_RAND_STATUS)
   check_symbol_exists(RAND_screen "${CURL_INCLUDES}" HAVE_RAND_SCREEN)
   check_symbol_exists(RAND_egd    "${CURL_INCLUDES}" HAVE_RAND_EGD)
+
+  add_definitions(-DOPENSSL_SUPPRESS_DEPRECATED)
 endif()
 
 if(CMAKE_USE_MBEDTLS)