diff --git a/crates/cli/src/init.rs b/crates/cli/src/init.rs
index 00b7657b..70ca25af 100644
--- a/crates/cli/src/init.rs
+++ b/crates/cli/src/init.rs
@@ -959,11 +959,19 @@ pub fn generate_grammar_files(
                 allow_update,
                 |path| generate_file(path, SETUP_PY_TEMPLATE, language_name, &generate_opts),
                 |path| {
-                    let contents = fs::read_to_string(path)?;
+                    let mut contents = fs::read_to_string(path)?;
                     if !contents.contains("build_ext") {
                         info!("Replacing setup.py");
                         generate_file(path, SETUP_PY_TEMPLATE, language_name, &generate_opts)?;
                     }
+                    if !contents.contains(" and not get_config_var") {
+                        info!("Updating Python free-threading support in setup.py");
+                        contents = contents.replace(
+                            r#"startswith("cp"):"#,
+                            r#"startswith("cp") and not get_config_var("Py_GIL_DISABLED"):"#
+                        );
+                        write_file(path, contents)?;
+                    }
                     Ok(())
                 },
             )?;
diff --git a/crates/cli/src/templates/setup.py b/crates/cli/src/templates/setup.py
index 7f92eaee..bcf184b7 100644
--- a/crates/cli/src/templates/setup.py
+++ b/crates/cli/src/templates/setup.py
@@ -32,7 +32,7 @@ class BuildExt(build_ext):
 class BdistWheel(bdist_wheel):
     def get_tag(self):
         python, abi, platform = super().get_tag()
-        if python.startswith("cp"):
+        if python.startswith("cp") and not get_config_var("Py_GIL_DISABLED"):
             python, abi = "cp310", "abi3"
         return python, abi, platform