diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa6fba2..c4f5ade 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -174,6 +174,7 @@ endif()
 
 set(BeamMP_Libraries
     Boost::boost
+    Boost::system
     doctest::doctest
     OpenSSL::SSL
     OpenSSL::Crypto