diff --git a/pyproject.toml b/pyproject.toml
index 8544bb20..6e0afacc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,11 @@
 [build-system]
-requires = ["setuptools", "wheel", "cython==0.29.30", "numpy==1.22.0", "packaging"]
+requires = [
+    "setuptools",
+    "wheel",
+    "cython~=0.29.30",
+    "numpy>=1.22.0",
+    "packaging",
+]
 
 [flake8]
 max-line-length=120
diff --git a/requirements.txt b/requirements.txt
index 76071439..2837c36e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ flask==2.*
 pysbd==0.3.4
 # deps for notebooks
 umap-learn==0.5.*
-pandas==1.4.*
+pandas>=1.4,<2.0
 # deps for training
 matplotlib==3.7.*
 # coqui stack