diff --git a/requirements_dev.txt b/requirements_dev.txt
index 67b2a0e632283c89d07d778f935f0328559ffb8a..0bc1c76c25c5fc43a1f43ecaf484d23931f5bf7c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -20,6 +20,8 @@ xarray==0.11.3
 matplotlib==3.0.2
 PyQt5==5.12
 Pillow==5.4.1
+CairoSVG==2.3.1
+pycairo==1.18.1
 
 msgpack==0.6.1
 svgutils==0.3.1