diff --git a/bridgepp/CMakeLists.txt b/bridgepp/CMakeLists.txt
index f4a0a553..02d631dc 100644
--- a/bridgepp/CMakeLists.txt
+++ b/bridgepp/CMakeLists.txt
@@ -172,16 +172,8 @@ if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
     cmake_policy(SET CMP0135 NEW) # avoid warning DOWNLOAD_EXTRACT_TIMESTAMP
 endif ()
 
-include(FetchContent)
-FetchContent_Declare(
-    googletest
-    URL https://github.com/google/googletest/archive/b796f7d44681514f58a683a3a71ff17c94edb0c1.zip
-)
-
-# For Windows: Prevent overriding the parent project's compiler/linker settings
-set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-
-FetchContent_MakeAvailable(googletest)
+# Use find_package to use the gtest package provided by Nix
+find_package(GTest REQUIRED)
 
 enable_testing()