diff --git a/pyproject.toml b/pyproject.toml
index 8476bf8..f0e2b5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ packages = [
 [tool.poetry.dependencies]
 python = ">=3.9,<3.11"
 urllib3 = "<2.0"
-pandas = "^2.0.0"
+pandas = "^1.0.0"
 xxhash = "^2.0.0"
 rdchiral = "^1.1.0"
 PyYAML = "^6.0.1"