diff --git a/.ci/requirements_linux.txt b/.ci/requirements_linux.txt
index f1463095..bae2fe2d 100644
--- a/.ci/requirements_linux.txt
+++ b/.ci/requirements_linux.txt
@@ -1,4 +1,4 @@
-tox
-tox-venv
-requests
-cmake
+tox==3.28.0
+tox-venv==0.4.0
+requests==2.27.1
+cmake==3.25.0
diff --git a/.ci/requirements_macos.txt b/.ci/requirements_macos.txt
index f1463095..bae2fe2d 100644
--- a/.ci/requirements_macos.txt
+++ b/.ci/requirements_macos.txt
@@ -1,4 +1,4 @@
-tox
-tox-venv
-requests
-cmake
+tox==3.28.0
+tox-venv==0.4.0
+requests==2.27.1
+cmake==3.25.0