diff --git a/docs/ACKNOWLEDGEMENTS.md b/docs/ACKNOWLEDGEMENTS.md
index b2b7c64..94dbdbf 100644
--- a/docs/ACKNOWLEDGEMENTS.md
+++ b/docs/ACKNOWLEDGEMENTS.md
@@ -102,6 +102,7 @@ is acknowledged and greatly appreciated:
  * [dbungert](https://codeberg.org/dbungert) - reported issue with *valgrind* 3.23 misreporting leaking file descriptors ([#97](https://codeberg.org/a-j-wood/pv/issues/97))
  * Joachim Haga - suggested showing progress in the window title ([#3](https://codeberg.org/a-j-wood/pv/issues/3))
  * [Martin Sarsale](https://github.com/runa) - suggested showing progress in the process title ([#4](https://codeberg.org/a-j-wood/pv/issues/4))
+ * [2bits](https://github.com/2bits) - reported position sensing fault with **--watchfd** in 1.9.0 ([#118](https://codeberg.org/a-j-wood/pv/issues/118))
 
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