diff --git a/mypyc/lib-rt/setup.py b/mypyc/lib-rt/setup.py
index afbceba060f4..299b0acd96e7 100644
--- a/mypyc/lib-rt/setup.py
+++ b/mypyc/lib-rt/setup.py
@@ -1,4 +1,4 @@
-"""Build script for mypyc C runtime library unit tests.
+"""Build script for mypyc C runtime library and C API unit tests.
 
 The tests are written in C++ and use the Google Test framework.
 """
diff --git a/test-requirements.txt b/test-requirements.txt
index bbaf1ce6010f..0dc2a4cf8f18 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -22,7 +22,7 @@ identify==2.6.15
     # via pre-commit
 iniconfig==2.1.0
     # via pytest
-librt==0.2.2
+librt==0.2.3
     # via -r mypy-requirements.txt
 lxml==6.0.2 ; python_version < "3.15"
     # via -r test-requirements.in