diff --git a/CMSIS/Core/Test/requirements.txt b/CMSIS/Core/Test/requirements.txt
index b3b0791d..0b968380 100644
--- a/CMSIS/Core/Test/requirements.txt
+++ b/CMSIS/Core/Test/requirements.txt
@@ -2,5 +2,5 @@
 #
 # Python requirements for build.py script
 #
-python-matrix-runner~=1.2
+python-matrix-runner~=1.3
 lit~=17.0
diff --git a/CMSIS/CoreValidation/Project/requirements.txt b/CMSIS/CoreValidation/Project/requirements.txt
index 85fe36f3..5acb80bd 100644
--- a/CMSIS/CoreValidation/Project/requirements.txt
+++ b/CMSIS/CoreValidation/Project/requirements.txt
@@ -2,5 +2,4 @@
 #
 # Python requirements for build.py script
 #
-python-matrix-runner~=1.2
-lxml~=4.8
+python-matrix-runner~=1.3