diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 40c46d5..2ed2170 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -24,9 +24,9 @@ else()
     CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
     CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
     if(COMPILER_SUPPORTS_CXX14)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing -std=c++14 -O3 -Wall -Wextra -Wpedantic -Wno-missing-braces -Wconversion -Wsign-conversion -Wctor-dtor-privacy -Wshadow -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Woverloaded-virtual")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -fno-strict-aliasing -std=c++14 -O3 -Wall -Wextra -Wpedantic -Wno-missing-braces -Wconversion -Wsign-conversion -Wctor-dtor-privacy -Wshadow -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Woverloaded-virtual")
     elseif(COMPILER_SUPPORTS_CXX11)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing -std=c++11 -O3 -Wall -Wextra -Wpedantic -Wno-missing-braces -Wconversion -Wsign-conversion -Wctor-dtor-privacy -Wshadow -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Woverloaded-virtual")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -fno-strict-aliasing -std=c++11 -O3 -Wall -Wextra -Wpedantic -Wno-missing-braces -Wconversion -Wsign-conversion -Wctor-dtor-privacy -Wshadow -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Woverloaded-virtual")
     else()
       message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
     endif()
@@ -53,3 +53,4 @@ add_gsl_test(utils_tests)
 add_gsl_test(owner_tests)
 add_gsl_test(byte_tests)
 add_gsl_test(algorithm_tests)
+add_gsl_test(thread_tests)