diff --git a/deployment/idunn/recipe.toml b/deployment/idunn/recipe.toml
index 6e9fbff..e9a0d8d 100644
--- a/deployment/idunn/recipe.toml
+++ b/deployment/idunn/recipe.toml
@@ -33,42 +33,49 @@ required_gitlinks = ["vendor/CultLib"]
 id = "install-cultlib"
 phase = "build"
 runner = "node-build"
+required_environment = ["NPM_CONFIG_CACHE", "HOME"]
 argv = ["npm", "ci", "--ignore-scripts", "--prefix", "vendor/CultLib"]
 
 [[steps]]
 id = "build-cultcache-ts"
 phase = "build"
 runner = "node-build"
+required_environment = ["NPM_CONFIG_CACHE", "HOME"]
 argv = ["npm", "run", "build", "--prefix", "vendor/CultLib", "--workspace=cultcache-ts"]
 
 [[steps]]
 id = "build-cultnet-ts"
 phase = "build"
 runner = "node-build"
+required_environment = ["NPM_CONFIG_CACHE", "HOME"]
 argv = ["npm", "run", "build", "--prefix", "vendor/CultLib", "--workspace=cultnet-ts"]
 
 [[steps]]
 id = "build-cultmesh-ts"
 phase = "build"
 runner = "node-build"
+required_environment = ["NPM_CONFIG_CACHE", "HOME"]
 argv = ["npm", "run", "build", "--prefix", "vendor/CultLib", "--workspace=cultmesh-ts"]
 
 [[steps]]
 id = "install-heimdall"
 phase = "build"
 runner = "node-build"
+required_environment = ["NPM_CONFIG_CACHE", "HOME"]
 argv = ["pnpm", "install", "--frozen-lockfile"]
 
 [[steps]]
 id = "test-heimdall"
 phase = "test"
 runner = "node-build"
+required_environment = ["NPM_CONFIG_CACHE", "HOME"]
 argv = ["pnpm", "test"]
 
 [[steps]]
 id = "build-heimdall"
 phase = "build"
 runner = "node-build"
+required_environment = ["NPM_CONFIG_CACHE", "HOME"]
 argv = ["pnpm", "build"]
 
 # The unit runs dist/src/index.js, and Node resolves its imports at runtime, so