diff --git a/tox.ini b/tox.ini
index bcd10fad9500ffc528d9b6cf19431a2dacb94643..e34a1e496b5317b95f61ec2c52f060d2bb7498b5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -26,6 +26,13 @@ passenv =
     DISPLAY
     HTTP_PROXY
     HTTPS_PROXY
+conda_deps =
+    cairosvg
+    pycairo
+    tk
+conda_channels :
+    conda-forge
+    anaconda
 deps =
     -r{toxinidir}/requirements_dev.txt
     -r{toxinidir}/requirements_continuous_integration.txt
@@ -40,6 +47,13 @@ passenv =
 ; HTTP_PROXY+HTTPS_PROXY required behind corporate proxies
     HTTP_PROXY
     HTTPS_PROXY
+conda_deps =
+    cairosvg
+    pycairo
+    tk
+conda_channels :
+    conda-forge
+    anaconda
 deps =
     -r{toxinidir}/requirements_dev.txt
     -r{toxinidir}/requirements_continuous_integration.txt