diff --git a/.forgejo/workflows/flake-update.yaml b/.forgejo/workflows/flake-update.yaml
index 0e8520b..8c7b094 100644
--- a/.forgejo/workflows/flake-update.yaml
+++ b/.forgejo/workflows/flake-update.yaml
@@ -13,6 +13,7 @@ on:
           - all
           - hyperhive
           - trollshell
+          - truth-machine
 
 jobs:
   update:
@@ -27,6 +28,7 @@ jobs:
             all) inputs="" ;;
             hyperhive) inputs="hyperhive hyperhive-website" ;;
             trollshell) inputs="trollshell" ;;
+            truth-machine) inputs="truth-machine" ;;
           esac
 
           nix flake update $inputs