diff --git a/python/requirements.txt b/python/requirements.txt
index 923095015..0d60db8f3 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,12 +1,12 @@
 Cython>=0.22
 cmdstanpy==0.9.5
 pystan>=2.14
-numpy>=1.10.0
+numpy>=1.15.4
 pandas>=1.0.4
 matplotlib>=2.0.0
 LunarCalendar>=0.0.9
 convertdate>=2.1.2
-holidays>=0.9.5
+holidays>=0.10.2
 setuptools-git>=1.2
 python-dateutil>=2.8.0
 tqdm>=4.36.1