diff --git a/pyproject.toml b/pyproject.toml
index fe1113d..547e74c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,9 +18,9 @@ requires-python = ">=3.9"
 dependencies = [
     'pandas',
     'numpy',
-    'dask=2024.3.1',
+    'dask==2024.3.1',
     'dask[distributed]>=2024.3.0',
-    'dask-expr-1.0.5',
+    'dask-expr==1.0.5',
     'pyarrow',
     'pyvo',
     'scipy',