diff --git a/mark-II-Rpi-devkit/code/TestingJig/requirements.txt b/mark-II-Rpi-devkit/code/TestingJig/requirements.txt
index bff3bed..589a323 100644
--- a/mark-II-Rpi-devkit/code/TestingJig/requirements.txt
+++ b/mark-II-Rpi-devkit/code/TestingJig/requirements.txt
@@ -20,7 +20,7 @@ convertdate==2.3.1
 cov-core==1.15.0
 coverage==4.5.4
 coveralls==1.8.2
-cryptography==3.4.6
+cryptography==39.0.1
 cucumber-tag-expressions==3.0.0
 ddg3==0.6.6
 decorator==4.4.2
diff --git a/mark-II-Rpi-devkit/code/TestingJig/requirements3.txt b/mark-II-Rpi-devkit/code/TestingJig/requirements3.txt
index 37388ef..755c157 100644
--- a/mark-II-Rpi-devkit/code/TestingJig/requirements3.txt
+++ b/mark-II-Rpi-devkit/code/TestingJig/requirements3.txt
@@ -17,7 +17,7 @@ convertdate==2.3.1
 cov-core==1.15.0
 coverage==4.5.4
 coveralls==1.8.2
-cryptography==3.4.6
+cryptography==39.0.1
 cucumber-tag-expressions==3.0.0
 ddg3==0.6.6
 decorator==4.4.2
diff --git a/mark-II-Rpi-devkit/code/TestingJig/requirements3sudo.txt b/mark-II-Rpi-devkit/code/TestingJig/requirements3sudo.txt
index 8d731f7..8aa5505 100644
--- a/mark-II-Rpi-devkit/code/TestingJig/requirements3sudo.txt
+++ b/mark-II-Rpi-devkit/code/TestingJig/requirements3sudo.txt
@@ -6,7 +6,7 @@ blinker==1.4
 certifi==2019.11.28
 cffi==1.14.5
 chardet==3.0.4
-cryptography==3.4.6
+cryptography==39.0.1
 dbus-python==1.2.16
 ddg3==0.6.6
 distro==1.4.0