diff --git a/requirements.txt b/requirements.txt
index 9b597696..e9d6c414 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ joblib >= 1.3.0
 loguru
 numpy < 2.0.0
 pandas
-rdkit >= 2023.9.1
+rdkit >= 2023.9.1, <= 2023.9.6
 scipy
 setuptools
 scikit-learn >= 1.4.0
diff --git a/requirements_chemprop.txt b/requirements_chemprop.txt
index b434b64b..6f6b66d7 100644
--- a/requirements_chemprop.txt
+++ b/requirements_chemprop.txt
@@ -1,2 +1,2 @@
-chemprop>=2.0.0
+chemprop >= 2.0.0, < 2.0.3
 lightning
\ No newline at end of file