diff --git a/pyproject.toml b/pyproject.toml
index aca555d..a537435 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ classifiers = [
 [tool.poetry.dependencies]
 python = "^3.7"
 pywikibot = ">=6.6.1,<9.0.0"
-toolforge = {version="^5.0.0", optional=true}
+toolforge = {version=">=5,<7", optional=true}
 
 [tool.poetry.dev-dependencies]
 mypy = "^1.0"