diff --git a/readme.md b/readme.md
index 2821802..bf879d4 100644
--- a/readme.md
+++ b/readme.md
@@ -74,7 +74,7 @@ Enjoy!
 ### Releases
 
 * 2020-09-24, `v1.6.6`: stable release 1.6: using standard C atomics, passing tsan testing, improved
-  handling of failing to commit on Windows, add `mi_process_info` api call.
+  handling of failing to commit on Windows, add [`mi_process_info`](https://github.com/microsoft/mimalloc/blob/master/include/mimalloc.h#L156) api call.
 * 2020-08-06, `v1.6.4`: stable release 1.6: improved error recovery in low-memory situations,
   support for IllumOS and Haiku, NUMA support for Vista/XP, improved NUMA detection for AMD Ryzen, ubsan support.
 * 2020-05-05, `v1.6.3`: stable release 1.6: improved behavior in out-of-memory situations, improved malloc zones on macOS,