diff --git a/ChangeLog b/ChangeLog
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+Changes in version 0.2.8.11 - 2016-12-??
+  Tor 0.2.8.11 backports fixes for additional portability issues that
+  could prevent Tor from building correctly on OSX Sierra, or with
+  OpenSSL 1.1. Affected users should upgrade; others can safely stay
+  with 0.2.8.10.
+
+  o Minor bugfixes (portability):
+    - Avoid compilation errors when building on OSX Sierra. Sierra began
+      to support the getentropy() API, but created a few problems in
+      doing so. Tor 0.2.9 has a more thorough set of workarounds; in
+      0.2.8, we are just using the /dev/urandom interface. Fixes bug
+      20865. Bugfix on 0.2.8.1-alpha.
+
+  o Minor bugfixes (portability, backport from 0.2.9.5-alpha):
+    - Fix compilation with OpenSSL 1.1 and less commonly-used CPU
+      architectures. Closes ticket 20588.
+
+
 Changes in version 0.2.8.10 - 2016-12-02
   Tor 0.2.8.10 backports a fix for a bug that would sometimes make clients
   unusable after they left standby mode. It also backports fixes for