diff --git a/requirements.txt b/requirements.txt
index c6bdf25..50f5951 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 future==0.17.1
 kiwisolver==1.1.0
 matplotlib==3.1.0
-numpy==1.16.4
+numpy==1.22.0
 pandas==0.24.2
 pandocfilters==1.4.2
 parso==0.5.0
diff --git a/requirements_rtd.txt b/requirements_rtd.txt
index 2c4afcd..c8ffe60 100644
--- a/requirements_rtd.txt
+++ b/requirements_rtd.txt
@@ -1,7 +1,7 @@
 future==0.17.1
 kiwisolver==1.1.0
 matplotlib==3.1.0
-numpy==1.16.4
+numpy==1.22.0
 pandas==0.24.2
 pandocfilters==1.4.2
 parso==0.5.0