diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index 0a2b93786d97..1c6ef24c2a74 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -50,7 +50,7 @@ jobs:
     with:
       submodules: false
       coverage: codecov
-      toxdeps: "<'4'"
+      toxdeps: "'tox<4'"
       libraries: |
         apt:
           - language-pack-fr
@@ -87,7 +87,7 @@ jobs:
     with:
       submodules: false
       coverage: codecov
-      toxdeps: "<'4'"
+      toxdeps: "'tox<4'"
       libraries: |
         apt:
           - language-pack-de
diff --git a/tox.ini b/tox.ini
index 581ff633b64c..e428b6be4f7a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,7 @@ requires =
     setuptools >= 30.3.0
     pip >= 19.3.1
     tox-pypi-filter >= 0.12
+    tox < 4
 isolated_build = true
 
 [testenv]