diff --git a/pyproject.toml b/pyproject.toml
index 533b5618..a0a73527 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
 tests = [
     "pytest==8.3.3",
     "coverage==7.6.8",
-    "python-keycloak>=3.9.1,<4.0.0",
+    "python-keycloak>=3.9.1,<5.0.0",
 ]
 
 doc = [