diff --git a/requirements.txt b/requirements.txt
index 580ea4c..97feaec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 svgwrite   ~= 1.4.1
-numpy      ~= 1.20.3
-matplotlib ~= 3.4.2
+numpy      ~= 1.25
+matplotlib ~= 3.6
 adif-io    ~= 0.0.3
 maidenhead ~= 1.6.0