diff --git a/pyproject.toml b/pyproject.toml
index 430a9605..d90f9b06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,6 +48,8 @@ keep-going = false
 # https://cython.rtfd.io/en/latest/src/userguide/source_files_and_compilation.html#compiler-directives
 embedsignature = "True"
 emit_code_comments = "True"
+language_level = "3"
+freethreading_compatible = "True"
 
 [tool.local.cythonize.kwargs.compile-time-env]
 # This section can contain compile time env vars
diff --git a/yarl/_quoting_c.pyx b/yarl/_quoting_c.pyx
index 91b0644f..dacf6b08 100644
--- a/yarl/_quoting_c.pyx
+++ b/yarl/_quoting_c.pyx
@@ -1,5 +1,3 @@
-# cython: language_level=3, freethreading_compatible=True
-
 from cpython.exc cimport PyErr_NoMemory
 from cpython.mem cimport PyMem_Free, PyMem_Malloc, PyMem_Realloc
 from cpython.unicode cimport (