diff --git a/pyproject.toml b/pyproject.toml
index 147dd63..b76639e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ classifiers = [
 [project.optional-dependencies]
 Dask = [
     "openeo-pg-parser-networkx>=2023.11.0",
-    "openeo-processes-dask>=2023.11.6",
+    "openeo-processes-dask[implementations]>=2023.11.6",
     "joblib>=1.3.2", # extra dependency that is not properly declared in openeo-processes-dask https://github.com/Open-EO/openeo-processes-dask/issues/216
 ]