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-rw-r--r--docs/Changelog.md3
-rw-r--r--docs/env_variables.md4
2 files changed, 7 insertions, 0 deletions
diff --git a/docs/Changelog.md b/docs/Changelog.md
index b18bf30f..6269e3b1 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -41,6 +41,9 @@ sending a mail to <afl-users+subscribe@googlegroups.com>.
     - update to new frida release, handles now c++ throw/catch
   - unicorn_mode:
     - update unicorn engine, fix C example
+  - utils:
+    - removed optimin because it looses coverage due a bug and is
+      unmaintained :-(
 
 
 ### Version ++4.00c (release)
diff --git a/docs/env_variables.md b/docs/env_variables.md
index fe9c6e07..3c69c0b6 100644
--- a/docs/env_variables.md
+++ b/docs/env_variables.md
@@ -517,6 +517,10 @@ checks or alter some of the more exotic semantics of the tool:
     (empty/non present) will add no tags to the metrics. For more information,
     see [rpc_statsd.md](rpc_statsd.md).
 
+  - `AFL_SYNC_TIME` allows you to specify a different minimal time (in minutes)
+    between fuzzing instances synchronization. Default sync time is 30 minutes,
+    note that time is halfed for -M main nodes.
+
   - Setting `AFL_TARGET_ENV` causes AFL++ to set extra environment variables for
     the target binary. Example: `AFL_TARGET_ENV="VAR1=1 VAR2='a b c'" afl-fuzz
     ... `. This exists mostly for things like `LD_LIBRARY_PATH` but it would