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.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 932382d5..3b849d03 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,8 @@
 ## 1.9.2 (November 18th 2024)
 
 
-* Adjustment to exception handling (#158).
+* Enable builds for free-threading Python versions (#157).
+* Adjustment to exception handling (#159).
 
 
 ## 1.9.1 (November 15th 2024)
diff --git a/indexed_gzip/__init__.py b/indexed_gzip/__init__.py
index 1682748d..c79fb998 100644
--- a/indexed_gzip/__init__.py
+++ b/indexed_gzip/__init__.py
@@ -19,4 +19,4 @@
 """
 
 
-__version__ = '1.9.1'
+__version__ = '1.9.2'
diff --git a/indexed_gzip/indexed_gzip.pyx b/indexed_gzip/indexed_gzip.pyx
index f5a8919a..10b45ca0 100644
--- a/indexed_gzip/indexed_gzip.pyx
+++ b/indexed_gzip/indexed_gzip.pyx
@@ -1,4 +1,4 @@
-# cython: binding=True,embedsignature=True
+# cython: binding=True,embedsignature=True,freethreading_compatible=True
 #
 # The IndexedGzipFile class.
 #
diff --git a/pyproject.toml b/pyproject.toml
index e64d4f6d..04724ad4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires      = ["setuptools >= 40.8.0", "cython"]
+requires      = ["setuptools >= 40.8.0", "cython >= 3.1.0a1"]
 build-backend = "setuptools.build_meta"
 
 [project]