diff --git a/requirements.txt b/requirements.txt
index c58992419e0..df51dfb828a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ beautifulsoup4>=4,<=4.6.3
 pyelftools>=0.24,<=0.25
 manifest-tool==1.5.2
 icetea>=1.2.1,<1.3
-pycryptodome>=3.7.2,<=3.7.3
+pycryptodome>=3.9.3,<4
 pyusb>=1.0.0,<2.0.0
 hidapi>=0.7.99,<0.8.0;platform_system!="Linux"
 cmsis-pack-manager>=0.2.3,<0.3.0