diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1692183f0dbb24a4dd0291028618456de8746581..2d5060f6e5564615f9e5b5c70fa76100b46e6bb0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -210,6 +210,7 @@ Pierre Roux, and Thibaut Pérami. Thanks a lot to everyone involved!
   `stdpp.unstable.bitvector_tactics` to `stdpp.bitvector.tactics`. The
   complete library can be imported with `stdpp.bitvector.bitvector`.
   (by Michael Sammler)
+- Add lemma `lookup_total_fmap`.
 
 The following `sed` script should perform most of the renaming
 (on macOS, replace `sed` by `gsed`, installed via e.g. `brew install gnu-sed`).