diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 0869aaa..68bc57f 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,5 +1,8 @@
+find_package(Threads)
+
 set(libs
     ${mbedtls_target}
+    ${CMAKE_THREAD_LIBS_INIT}
 )
 
 # Set the project root directory if it's not already defined, as may happen if
diff --git a/tests/Makefile b/tests/Makefile
index 2249a55..bcc3b93 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -57,6 +57,7 @@
 DLEXT ?= so
 EXEXT=
 SHARED_SUFFIX=
+LOCAL_LDFLAGS += -lpthread
 endif
 
 ifdef WINDOWS