diff --git a/pyproject.toml b/pyproject.toml
index ea3a040..7586fa1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,6 @@ dependencies = [
     "mediapy==1.0.2",
     "ipykernel==6.22.0",
     "ipyvtklink==0.2.3",
-    "gemmi==0.7.3",
     "biotite==1.2.0",
     "rdkit==2025.3.5",
     "gemmi==0.7.3",