diff --git a/.github/workflows/build-nightly-container.yml b/.github/workflows/build-nightly-container.yml
index fe5e43b09..701f1caf7 100644
--- a/.github/workflows/build-nightly-container.yml
+++ b/.github/workflows/build-nightly-container.yml
@@ -15,8 +15,8 @@ on:
       - .github/ISSUE_TEMPLATE/*
       - kubernetes/**
       # Nix development files that are not used here.
-      - "*.nix"
-      - flake.lock
+      - .envrc
+      - "nix/**"
 
 jobs:
   release:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 73e3fc8d8..8449ab168 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,8 +25,8 @@ on:
       - kubernetes/**
 
       # Nix development files that are not used here.
-      - "*.nix"
-      - flake.flake
+      - .envrc
+      - "nix/**"
 
 jobs:
   build: