diff --git a/CMakeLists.txt b/CMakeLists.txt
index 34ead91..1905cf5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,13 +12,13 @@ enable_testing()
 add_library(cpptimer INTERFACE)
 
 add_executable(demo demo.cpp)
-TARGET_LINK_LIBRARIES(demo cpptimer)
+TARGET_LINK_LIBRARIES(demo cpptimer pthread)
 
 add_executable(demo_runnable demo_runnable.cpp)
-TARGET_LINK_LIBRARIES(demo_runnable cpptimer)
+TARGET_LINK_LIBRARIES(demo_runnable cpptimer pthread)
 
 add_executable(demo_stdfunccallback demo_stdfunccallback.cpp)
-TARGET_LINK_LIBRARIES(demo_stdfunccallback cpptimer)
+TARGET_LINK_LIBRARIES(demo_stdfunccallback cpptimer pthread)
 
 
 add_subdirectory(test)
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 586cb31..08bb97a 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -5,21 +5,21 @@ include_directories(
   )
 
 add_executable (test_startstop startstop.cpp)
-TARGET_LINK_LIBRARIES(test_startstop cpptimer)
+TARGET_LINK_LIBRARIES(test_startstop cpptimer pthread)
 add_test(TestStartStop test_startstop)
 
 add_executable (test_twotimers twotimers.cpp)
-TARGET_LINK_LIBRARIES(test_twotimers cpptimer)
+TARGET_LINK_LIBRARIES(test_twotimers cpptimer pthread)
 add_test(TestTwotimers test_twotimers)
 
 add_executable (test_startstop_ms startstop_ms.cpp)
-TARGET_LINK_LIBRARIES(test_startstop_ms cpptimer)
+TARGET_LINK_LIBRARIES(test_startstop_ms cpptimer pthread)
 add_test(TestStartStop_ms test_startstop_ms)
 
 add_executable (test_twotimers_ms twotimers_ms.cpp)
-TARGET_LINK_LIBRARIES(test_twotimers_ms cpptimer)
+TARGET_LINK_LIBRARIES(test_twotimers_ms cpptimer pthread)
 add_test(TestTwotimers_ms test_twotimers_ms)
 
 add_executable (test_oneshot oneshot.cpp)
-TARGET_LINK_LIBRARIES(test_oneshot cpptimer)
+TARGET_LINK_LIBRARIES(test_oneshot cpptimer pthread)
 add_test(TestOneShot test_oneshot)