diff --git a/requirements.3.9.txt b/requirements.3.9.txt
index 89895ce..50542d4 100644
--- a/requirements.3.9.txt
+++ b/requirements.3.9.txt
@@ -9,7 +9,7 @@ joblib==1.0.1
 kiwisolver==1.3.1
 lxml==4.6.3
 matplotlib==3.4.2
-numpy==1.20.3
+numpy==1.22.0
 obspy==1.2.2
 Pillow==8.2.0
 pyparsing==2.4.7
diff --git a/requirements.txt b/requirements.txt
index 3dd917b..2237ffb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ joblib==1.2.0
 kiwisolver==1.4.4
 lxml==4.9.1
 matplotlib==3.6.2
-numpy==1.23.5
+numpy==1.22.0
 obspy==1.4.0
 packaging==22.0
 Pillow==9.3.0