diff --git a/pyproject.toml b/pyproject.toml
index 44e78d3..19ba4d8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,6 +21,7 @@
 sphinxcontrib-plantuml = "^0.24.1"
 sphinx-rtd-theme = "^1.1.1"
 pip-tools = "^6.4.0"
+sphinxcontrib-svg2pdfconverter = "^1.2.2"
 
 [tool.poetry.group.ci.dependencies]
 click = "^8.1.3"