diff --git a/CMakeLists.txt b/CMakeLists.txt
index 53ddaed..3d75dd5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,8 +47,9 @@ if ((NOT LEVELDB_INCLUDE_PATH) OR (NOT LEVELDB_LIB))
     message(FATAL_ERROR "Fail to find leveldb")
 endif()
 
-find_path(GFLAGS_INCLUDE_PATH NAMES gflags/gflags.h)
-find_library(GFLAGS_LIB NAMES gflags)
+find_package(gflags CONFIG REQUIRED)
+get_target_property(GFLAGS_INCLUDE_PATH gflags::gflags INTERFACE_INCLUDE_DIRECTORIES)
+set(GFLAGS_LIB gflags::gflags)
 if ((NOT GFLAGS_INCLUDE_PATH) OR (NOT GFLAGS_LIB))
     message(FATAL_ERROR "Fail to find gflags")
 endif()
@@ -77,13 +78,7 @@ if (NOT PROTOBUF_PROTOC_EXECUTABLE)
     set (PROTOBUF_PROTOC_EXECUTABLE "${PROTO_LIB_DIR}/../bin/protoc")
 endif()
 
-if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
-    set(OPENSSL_ROOT_DIR
-        "/usr/local/opt/openssl"    # Homebrew installed OpenSSL
-        )
-endif()
-
-include(FindOpenSSL)
+find_package(OpenSSL REQUIRED)
 
 include_directories(
         ${GFLAGS_INCLUDE_PATH}