diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index caa17e7..9cc2a54 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -15,12 +15,12 @@ jobs:
       - uses: actions/checkout@v4
       - run: echo "IMAGE=ghcr.io/${GITHUB_REPOSITORY}:$(git log -1 --pretty=%ad --date=format:%Y-%m-%d)-$(git log --pretty=format:'%h' -n 1)" >> $GITHUB_ENV
       - run: docker build -t $IMAGE .
-      - uses: docker/login-action@v2
+      - uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - uses: docker/build-push-action@v4
+      - uses: docker/build-push-action@v5
         with:
           push: true
           tags: ${{ env.IMAGE }}
diff --git a/lib/api.rb b/lib/api.rb
index fdb2cdd..905732e 100644
--- a/lib/api.rb
+++ b/lib/api.rb
@@ -45,7 +45,7 @@ class G < Grape::API
 
   helpers do
     params :grunnbeløp do
-      optional :dato, type: Date, coerce_with: DateTime.method(:iso8601)
+      optional :dato, type: Date
     end
 
     def logger
@@ -85,7 +85,7 @@ def logger
     detail 'Man kan få historikk fra en spesifikk dato ved å spesifisere ?fra=<ISO 8601>'
   end
   params do
-    optional :fra, type: Date, coerce_with: DateTime.method(:iso8601)
+    optional :fra, type: Date
   end
   get :historikk do
     fra = params[:fra]
diff --git a/lib/g.rb b/lib/g.rb
index 452e5f8..20e31a0 100644
--- a/lib/g.rb
+++ b/lib/g.rb
@@ -4,7 +4,7 @@
 require 'json'
 
 module Grunnbeløp
-  @grunnbeløp_data = JSON.parse(File.read(ENV.fetch('GRUNNBELOP', nil)), object_class: Hash)
+  @grunnbeløp_data = JSON.parse(File.read(ENV.fetch('GRUNNBELOP', './grunnbeløp.json')), object_class: Hash)
   @date_format = '%Y-%m-%d'
 
   def self.by_date(needle)
diff --git a/test/test_api.rb b/test/test_api.rb
index e96a5f7..fcc5520 100644
--- a/test/test_api.rb
+++ b/test/test_api.rb
@@ -31,10 +31,12 @@ def app
                    JSON.parse(last_response.body))
     end
 
-    it 'returnere feilkode ved ugyldige datoer' do
+    it 'vi støtter norsk talemål å skrive dato på' do
       get '/api/v1/grunnbeloep?dato=24-08-2010'
-      assert_equal 400, last_response.status
-      assert_equal 'dato is invalid', JSON.parse(last_response.body)['error']
+      assert last_response.ok?
+      assert_equal({ 'dato' => '1996-05-01', 'grunnbeloep' => 41_000, 'grunnbeloepPerMaaned' => 3_417,
+                     'gjennomsnittPerAar' => 40_410, 'omregningsfaktor' => 1.045119 },
+                   JSON.parse(last_response.body))
     end
 
     it 'returnerer all historikk for grunnbeløp' do