diff --git a/python/ecdsa/requirements.txt b/python/ecdsa/requirements.txt
index 7d164d4..c9f81bc 100644
--- a/python/ecdsa/requirements.txt
+++ b/python/ecdsa/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2024.2.2
+certifi==2024.7.4
 charset-normalizer==3.3.2
 ecdsa==0.18.0
 idna==3.6