diff --git a/site-cookbooks/kosmos-bitcoin/recipes/c-lightning.rb b/site-cookbooks/kosmos-bitcoin/recipes/c-lightning.rb
index b8f2865..5eedd82 100644
--- a/site-cookbooks/kosmos-bitcoin/recipes/c-lightning.rb
+++ b/site-cookbooks/kosmos-bitcoin/recipes/c-lightning.rb
@@ -28,6 +28,7 @@ bash "compile_c-lightning" do
     make
     make install
   EOH
+  environment "PYTHON_VERSION" => "3"
   action :nothing
   notifies :restart, "systemd_unit[lightningd.service]", :delayed
 end