diff --git a/profiles/package.mask b/profiles/package.mask
index 81e9cfc..bdee332 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -30,3 +30,11 @@ dev-python/hdf5storage
 # I don't use the software anymore.
 # Removal after 2025-01-25.
 dev-python/multi_key_dict
+
+# Nils Freydank <nils.freydank@posteo.de> (2025-01-03)
+# Abandoned by upstream:
+# https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985
+# A migration to "vodozemac" is recommended.
+# Removal after 2025-01-14.
+dev-libs/olm
+