diff --git a/pyproject.toml b/pyproject.toml
index 2fb0e9805..5c6dc503c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,6 +63,7 @@ dependencies = [
     "xmltodict",
     "tenacity>=8.0.0",
     "python-dateutil",
+    "validators<=0.40.0",
 ]
 
 [project.optional-dependencies]
@@ -70,7 +71,6 @@ tests = [
     "liccheck>=0.4.9,<1",
     "flake8>=3.8.0,<4",
     "coverage>7",
-    "validators<=0.40.0",
     "azure-storage-blob>=12.8.1,<13",
     "httpretty>=1.0.0,<2",
     "deepdiff>=8,<9",