diff --git a/CMakeLists.txt b/CMakeLists.txt
index 20876ed..2fbc8fd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,6 +70,7 @@ if(GTEST_FOUND)
   target_link_libraries(unit_tests PUBLIC
     ${GTEST_BOTH_LIBRARIES}
     example
+    -lpthread
   )
 
   target_include_directories(unit_tests PUBLIC