diff --git a/pyproject.toml b/pyproject.toml
index c5f566a3..0d2feb6c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,6 +45,7 @@ dependencies = [
     "pyclesperanto-prototype",
     "tqdm",
     "matplotlib",
+    "pydensecrf2",
 ]
 dynamic = ["version", "entry-points"]