diff --git a/.ci/build_wheels.sh b/.ci/build_wheels.sh
index 79208115..d588c663 100755
--- a/.ci/build_wheels.sh
+++ b/.ci/build_wheels.sh
@@ -44,6 +44,9 @@ export CIBW_SKIP="pp*"
 #
 export CIBW_TEST_SKIP="*i686* *aarch64* cp312-win* cp313-win*"
 
+# Enable free-threaded builds for Python versions (3.13t) that support it
+export CIBW_FREE_THREADED_SUPPORT=1
+
 # Pytest makes it *very* awkward to run tests
 # from an installed package, and still find/
 # interpret a conftest.py file correctly.