diff --git a/pyproject.toml b/pyproject.toml
index 3b43b10a..14192b5c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -101,7 +101,7 @@ zeroconf = ">=0.54.0"
 [tool.poetry.group.dev.dependencies]
 black = ">=22.6.0"
 coverage = {extras = ["toml"], version = ">=7.2.2"}
-docformatter = {extras = ["tomli"], version = ">=1.6.5,<1.7.1"}  # upper bound is due to https://github.com/PyCQA/docformatter/issues/174
+docformatter = {extras = ["tomli"], version = ">=1.6.5,<1.7.6"}  # upper bound is due to https://github.com/PyCQA/docformatter/issues/174
 flask = ">=2.2.2"
 graphviz = ">=0.20.1"
 http-server-mock = ">=1.7"