diff --git a/requirements.txt b/requirements.txt
index 77e16ad..3e7251b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ charset-normalizer==2.0.12
 click==8.0.4
 cloudant==2.4.0
 coverage==5.5
-cryptography==41.0.6
+cryptography==43.0.1
 Cython==0.29.21
 flasgger==0.6.4
 Flask==1.0