diff --git a/requirements.txt b/requirements.txt
index 8d891b4..8f14138 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ colour>=0.1.5
 numpy>=1.18.1
 Pillow>=8.2.0
 portolan>=1.0.1
-pycairo
+pycairo>=1.20.1
 pytest>=6.2.2
 PyYAML>=4.2b1
 setuptools>=51.0.0