diff --git a/graphql.schema.json b/graphql.schema.json
index 5a4baa4..2106cfc 100644
--- a/graphql.schema.json
+++ b/graphql.schema.json
@@ -1284,13 +1284,9 @@
             "name": "hasFixedRate",
             "description": null,
             "type": {
-              "kind": "NON_NULL",
-              "name": null,
-              "ofType": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              }
+              "kind": "SCALAR",
+              "name": "Boolean",
+              "ofType": null
             },
             "defaultValue": null
           },
@@ -5782,7 +5778,7 @@
           },
           {
             "name": "lockCargoBikeById",
-            "description": "lock cargoBike - not implemented",
+            "description": "lock cargoBike returns true if bike is not locked or if it doesnt exist",
             "args": [
               {
                 "name": "id",
@@ -5873,6 +5869,37 @@
             "isDeprecated": false,
             "deprecationReason": null
           },
+          {
+            "name": "lockEquipmentById",
+            "description": "lock equipment returns true if bike is not locked or if it doesnt exist",
+            "args": [
+              {
+                "name": "id",
+                "description": null,
+                "type": {
+                  "kind": "NON_NULL",
+                  "name": null,
+                  "ofType": {
+                    "kind": "SCALAR",
+                    "name": "ID",
+                    "ofType": null
+                  }
+                },
+                "defaultValue": null
+              }
+            ],
+            "type": {
+              "kind": "NON_NULL",
+              "name": null,
+              "ofType": {
+                "kind": "SCALAR",
+                "name": "Boolean",
+                "ofType": null
+              }
+            },
+            "isDeprecated": false,
+            "deprecationReason": null
+          },
           {
             "name": "updateEquipment",
             "description": "update Equipment, returns updated equipment. CargoBike will be null, if cargoBikeId is not set. Pass null for cargoBikeIs to delete the relation",
diff --git a/src/app/graphqlOperations/fragments/bikeFragment.graphql b/src/app/graphqlOperations/fragments/bikeFragment.graphql
index 846fc8c..aa22522 100644
--- a/src/app/graphqlOperations/fragments/bikeFragment.graphql
+++ b/src/app/graphqlOperations/fragments/bikeFragment.graphql
@@ -6,6 +6,8 @@ fragment CargoBikeFieldsMutable on CargoBike {
     billing
     hasFixedRate
   }
+  lockedBy
+  lockedUntil
   dimensionsAndLoad {
     bikeLength
     bikeWeight
diff --git a/src/generated/graphql.ts b/src/generated/graphql.ts
index 9ed8576..3bfd8d7 100644
--- a/src/generated/graphql.ts
+++ b/src/generated/graphql.ts
@@ -174,7 +174,7 @@ export type InsuranceDataUpdateInput = {
   maintananceResponsible?: Maybe<Scalars['String']>;
   maintananceBenefactor?: Maybe<Scalars['String']>;
   maintananceAgreement?: Maybe<Scalars['String']>;
-  hasFixedRate: Scalars['Boolean'];
+  hasFixedRate?: Maybe<Scalars['Boolean']>;
   fixedRate?: Maybe<Scalars['Float']>;
   /** Projektzuschuss */
   projectAllowance?: Maybe<Scalars['Float']>;
@@ -767,12 +767,14 @@ export type Mutation = {
   __typename?: 'Mutation';
   /** creates new cargoBike and returns cargobike with new ID */
   createCargoBike: CargoBike;
-  /** lock cargoBike - not implemented */
+  /** lock cargoBike returns true if bike is not locked or if it doesnt exist */
   lockCargoBikeById: Scalars['Boolean'];
   /** updates cargoBike of given ID with supplied fields and returns updated cargoBike */
   updateCargoBike: CargoBike;
   /** creates new peace of unique Equipment */
   createEquipment: Equipment;
+  /** lock equipment returns true if bike is not locked or if it doesnt exist */
+  lockEquipmentById: Scalars['Boolean'];
   /** update Equipment, returns updated equipment. CargoBike will be null, if cargoBikeId is not set. Pass null for cargoBikeIs to delete the relation */
   updateEquipment: Equipment;
   /** creates new lendingStation and returns lendingStation with new ID */
@@ -813,6 +815,11 @@ export type MutationCreateEquipmentArgs = {
 };
 
 
+export type MutationLockEquipmentByIdArgs = {
+  id: Scalars['ID'];
+};
+
+
 export type MutationUpdateEquipmentArgs = {
   equipment: EquipmentUpdateInput;
 };
@@ -902,7 +909,7 @@ export type GetCargoBikesQuery = (
 
 export type CargoBikeFieldsMutableFragment = (
   { __typename?: 'CargoBike' }
-  & Pick<CargoBike, 'id' | 'group' | 'name' | 'numberOfChildren'>
+  & Pick<CargoBike, 'id' | 'group' | 'name' | 'lockedBy' | 'lockedUntil' | 'numberOfChildren'>
   & { insuranceData: (
     { __typename?: 'InsuranceData' }
     & Pick<InsuranceData, 'billing' | 'hasFixedRate'>
@@ -933,6 +940,8 @@ export const CargoBikeFieldsMutableFragmentDoc = gql`
     billing
     hasFixedRate
   }
+  lockedBy
+  lockedUntil
   dimensionsAndLoad {
     bikeLength
     bikeWeight