diff --git a/tools/analysis/requirements.txt b/tools/analysis/requirements.txt
index 8144939..adbb11c 100644
--- a/tools/analysis/requirements.txt
+++ b/tools/analysis/requirements.txt
@@ -1,5 +1,5 @@
 # flake8 is necessary for the Python stylecheck
-flake8
+flake8==6.0.0
 
 # gcovr is necessary for analyzing the coverage reports in CI
-gcovr
+gcovr==6.0