diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 92b5c3ea..8f64f882 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -67,7 +67,7 @@ repos:
             'werkzeug==2.0.3',
             'pyarrow==16.1.0',
             'fastparquet==2024.5.0',
-            'pyPDPPartitioner>=0.1.8'
+            'pyPDPPartitioner>=0.1.9'
         ] # Needed for mypy, so that it knows the types to check
 
   - repo: https://github.com/PyCQA/flake8
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58ab8cd2..db45f3e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 ## Version-Updates
 - ConfigSpace from 0.6.1 to 1.2.0
 - Numpy from 1.26.4 to 2.0.1
+- pyPDPPartitioner from to 0.1.8 to 0.1.9
 
 ## Ablation Paths
 - Added ablation paths as a plugin.
@@ -13,6 +14,9 @@
 - Added tests as well as documentation.
 - Modified the RandomForest surrogate model, so it can be passed the number of trees.
 
+## Bug-Fixes
+- Upgrade pyPDPPartitioner to 0.1.9 as a requirement which fixes a bug related to copying config space objects (#111).
+
 # Version 1.2.1
 
 ## Quality of Life
diff --git a/requirements.txt b/requirements.txt
index eb563306..ba099dc3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,4 +32,4 @@ werkzeug==2.0.3
 pyarrow==16.1.0
 fastparquet==2024.5.0
 
-pyPDPPartitioner>=0.1.8
+pyPDPPartitioner>=0.1.9