diff --git a/c/CHANGELOG.rst b/c/CHANGELOG.rst
index f8df5e553a..4ac6554bbc 100644
--- a/c/CHANGELOG.rst
+++ b/c/CHANGELOG.rst
@@ -1,3 +1,9 @@
+----------------------
+[0.99.10] - 2021-01-25
+----------------------
+
+Minor bugfix on internal APIs
+
 ---------------------
 [0.99.9] - 2021-01-22
 ---------------------
diff --git a/c/tskit/core.h b/c/tskit/core.h
index ec45570a6d..59f68ccaf2 100644
--- a/c/tskit/core.h
+++ b/c/tskit/core.h
@@ -129,7 +129,7 @@ to the API or ABI are introduced, i.e., the addition of a new function.
 The library patch version. Incremented when any changes not relevant to the
 to the API or ABI are introduced, i.e., internal refactors of bugfixes.
 */
-#define TSK_VERSION_PATCH   9
+#define TSK_VERSION_PATCH   10
 /** @} */
 
 /* Node flags */
diff --git a/python/tests/test_lowlevel.py b/python/tests/test_lowlevel.py
index e52b62ecf0..e04bd22764 100644
--- a/python/tests/test_lowlevel.py
+++ b/python/tests/test_lowlevel.py
@@ -2619,7 +2619,7 @@ def test_kastore_version(self):
 
     def test_tskit_version(self):
         version = _tskit.get_tskit_version()
-        assert version == (0, 99, 9)
+        assert version == (0, 99, 10)
 
 
 def test_uninitialised():