diff --git a/.github/workflows/cachix.yaml b/.github/workflows/cachix.yaml
index 74cf5c1..8659e99 100644
--- a/.github/workflows/cachix.yaml
+++ b/.github/workflows/cachix.yaml
@@ -46,6 +46,7 @@ jobs:
       matrix:
         name:
         - boreal
+        - poseidon
         - zephyrus
 
     steps: