diff --git a/pyproject.toml b/pyproject.toml
index 2e9f4329..0528996e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ dependencies = [
   "pandas==2.1.3",
   "pybedtools==0.9.1",
   "seaborn==0.13.0",
-  "sourmash==4.8.4",
+  "sourmash==4.8.12",
   "torch==2.3.1",
   "torchvision==0.19.0",
   "wandb==0.16.0",