diff --git a/flydra_analysis/pyproject.toml b/flydra_analysis/pyproject.toml
index c3f8abd9..02c817c6 100644
--- a/flydra_analysis/pyproject.toml
+++ b/flydra_analysis/pyproject.toml
@@ -106,7 +106,7 @@ wt0803 = "flydra_analysis.a2.conditions_draw:wt0803"
 
 [build-system]
 # following advice in https://stackoverflow.com/a/66479252
-requires = ["setuptools >= 61", "cython >= 0.29", "numpy"]
+requires = ["setuptools >= 61", "cython >= 0.29.32", "numpy"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools]
diff --git a/flydra_core/pyproject.toml b/flydra_core/pyproject.toml
index 575404f3..6e65ac70 100644
--- a/flydra_core/pyproject.toml
+++ b/flydra_core/pyproject.toml
@@ -13,7 +13,7 @@ urls.homepage = "https://github.com/strawlab/flydra"
 dependencies = [
     "numpy >= 1.19",
 
-    "tables",
+    "tables>=3.9.0",
     "cgkit1 >= 1.3.0",
     "pymvg >= 2.1.0",
     "adskalman",
@@ -29,7 +29,7 @@ flydra_analysis_flip_calibration = "flydra_core.reconstruct:flip_calibration"
 
 [build-system]
 # following advice in https://stackoverflow.com/a/66479252
-requires = ["setuptools >= 61", "cython >= 0.29", "numpy"]
+requires = ["setuptools >= 61", "cython >= 0.29.32", "numpy"]
 build-backend = "setuptools.build_meta"
 
 [tool.pytest.ini_options]