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+++ b/CHANGES
@@ -1,4 +1,59 @@
+Version 2.13
+============
+
+Released xxxx-xx-xx
+
+* New Features:
+
+  - Add `jansson_version_str()` and `jansson_version_cmp()` for runtime
+    version checking (#465).
+
+  - Add `json_object_update_new()`, `json_object_update_existing_new()`
+    and `json_object_update_missing_new()` functions (#499).
+
+  - Add `json_object_update_recursive()` (#505).
+
+* Build:
+
+  - Add -Wno-format-truncation to suppress format truncation warnings (#489).
+
+* Bug fixes:
+
+  - Remove `strtod` macro definition for MinGW (#498).
+
+  - Add infinite loop check in `json_deep_copy()` (#490).
+
+  - Add `pipe` macro definition for MinGW (#500).
+
+  - Enhance `JANSSON_ATTRS` macro to support earlier C standard(C89) (#501).
+
+  - Update version detection for sphinx-build (#502).
+
+* Tests:
+
+  - Add negative test case for `test_equal_complex()` (#506).
+
+* Documentation:
+
+  - Fix typos (#483, #494).
+
+  - Document that call the custom free function to free the return value 
+    of `json_dumps()` if you have a custom malloc/free (#490).
+
+  - Add vcpkg installation instructions (#496).
+
+  - Document that non-blocking file descriptor is not supported on
+    `json_loadfd()` (#503).
+
+  - Format code with clang-format (#508).
+
+* Other:
+
+  - Add fuzz target for jansson to integrate jansson with OSS-Fuzz (#480,
+    #484, #485, #486, #487).
+
 Version 2.12
+============
 
 Released 2018-11-26