diff --git a/eris/tools.toml b/eris/tools.toml
index a8b8621..24deb72 100644
--- a/eris/tools.toml
+++ b/eris/tools.toml
@@ -89,7 +89,7 @@ tools_for_extensions = [
 [isort]
   dependencies = ["python3-isort", "python3-colorama"]
   url = "https://pycqa.github.io/isort/"
-  command = "isort --check-only --diff --color"
+  command = "/usr/bin/python3 -m isort --check-only --diff --color"
   has_color = true
 
 [perl_syntax]