diff --git a/Configuration/Testing/Validation.yaml b/Configuration/Testing/Validation.yaml
index 45d895e..d24fcc2 100644
--- a/Configuration/Testing/Validation.yaml
+++ b/Configuration/Testing/Validation.yaml
@@ -16,12 +16,12 @@ TrueValidator:
 DigiComp\SettingValidator\Tests\Functional\Fixtures\TestValidationGroupsCustomObject:
   self:
     DigiComp.SettingValidator:Settings:
-      name: 'GroupValidatorCustom'
+      name: "GroupValidatorCustom"
 
 DigiComp\SettingValidator\Tests\Functional\Fixtures\TestValidationGroupsDefaultObject:
   self:
     DigiComp.SettingValidator:Settings:
-      name: 'GroupValidatorDefault'
+      name: "GroupValidatorDefault"
 
 GroupValidatorDefault:
   properties:
@@ -35,4 +35,4 @@ GroupValidatorCustom:
       BooleanValue:
         expectedValue: false
         validationGroups:
-          - 'Custom'
+          - "Custom"
diff --git a/Resources/Private/Schema/Validation.schema.yaml b/Resources/Private/Schema/Validation.schema.yaml
index c1dad01..71bc462 100644
--- a/Resources/Private/Schema/Validation.schema.yaml
+++ b/Resources/Private/Schema/Validation.schema.yaml
@@ -1,11 +1,11 @@
-type: 'dictionary'
+type: "dictionary"
 additionalProperties:
-  type: 'dictionary'
+  type: "dictionary"
   additionalProperties: false
   properties:
-    type: 'dictionary'
+    type: "dictionary"
     additionalProperties: false
     properties:
-      type: 'dictionary'
+      type: "dictionary"
     self:
-      type: 'dictionary'
+      type: "dictionary"