diff --git a/pkg/meta.yaml b/pkg/meta.yaml
index 058269a9..09c07e66 100644
--- a/pkg/meta.yaml
+++ b/pkg/meta.yaml
@@ -3,7 +3,7 @@
 
 package:
   name: pyepo
-  version: 0.4.4
+  version: 0.4.5
 
 source:
   path: ./
@@ -32,6 +32,7 @@ requirements:
     - scipy
     - pathos
     - tqdm
+    - configspace
     - scikit-learn
     - pytorch >=1.13
 
diff --git a/pkg/setup.py b/pkg/setup.py
index 80483522..49a37d4b 100644
--- a/pkg/setup.py
+++ b/pkg/setup.py
@@ -17,7 +17,7 @@
     long_description=long_description,
     long_description_content_type="text/markdown",
     # version
-    version = "0.4.4",
+    version = "0.4.5",
     # Github repo
     url = "https://github.com/khalil-research/PyEPO",
     # author name
@@ -32,6 +32,7 @@
         "scipy",
         "pathos",
         "tqdm",
+        "configspace",
         "scikit_learn",
         "torch>=1.13.1"],
     extras_require={