diff --git a/ProjectPlugins/CodexPlugin/ApiChecker.cs b/ProjectPlugins/CodexPlugin/ApiChecker.cs
index 5cf3dc96..f3e4e10a 100644
--- a/ProjectPlugins/CodexPlugin/ApiChecker.cs
+++ b/ProjectPlugins/CodexPlugin/ApiChecker.cs
@@ -9,7 +9,7 @@ namespace CodexPlugin
     public class ApiChecker
     {
         // <INSERT-OPENAPI-YAML-HASH>
-        private const string OpenApiYamlHash = "5A-B0-2A-AC-42-B1-A2-49-6F-9D-4E-D8-56-40-10-A6-67-F4-0D-2A-9F-E0-84-5C-EB-B8-2D-4F-D8-56-79-6C";
+        private const string OpenApiYamlHash = "0F-C8-02-1E-2C-2C-15-F6-91-6A-01-31-11-49-95-06-79-26-25-BF-27-3C-A8-2E-5F-7F-34-FD-C0-57-A0-9A";
         private const string OpenApiFilePath = "/codex/openapi.yaml";
         private const string DisableEnvironmentVariable = "CODEXPLUGIN_DISABLE_APICHECK";
 
diff --git a/ProjectPlugins/CodexPlugin/Mapper.cs b/ProjectPlugins/CodexPlugin/Mapper.cs
index 9db2a84c..053f15e5 100644
--- a/ProjectPlugins/CodexPlugin/Mapper.cs
+++ b/ProjectPlugins/CodexPlugin/Mapper.cs
@@ -56,7 +56,7 @@ namespace CodexPlugin
                 ProofProbability = ToDecInt(purchase.ProofProbability),
                 Reward = ToDecInt(purchase.PricePerSlotPerSecond),
                 Collateral = ToDecInt(purchase.RequiredCollateral),
-                Expiry = ToDecInt(DateTimeOffset.UtcNow.ToUnixTimeSeconds() + purchase.Expiry.TotalSeconds),
+                Expiry = ToDecInt(purchase.Expiry.TotalSeconds),
                 Nodes = Convert.ToInt32(purchase.MinRequiredNumberOfNodes),
                 Tolerance = Convert.ToInt32(purchase.NodeFailureTolerance)
             };
diff --git a/ProjectPlugins/CodexPlugin/openapi.yaml b/ProjectPlugins/CodexPlugin/openapi.yaml
index cf9b6b6c..49c75e64 100644
--- a/ProjectPlugins/CodexPlugin/openapi.yaml
+++ b/ProjectPlugins/CodexPlugin/openapi.yaml
@@ -213,8 +213,7 @@ components:
           description: Number as decimal string that represents how much collateral is asked from hosts that wants to fill a slots
         expiry:
           type: string
-          description: Number as decimal string that represents expiry time of the request (in unix timestamp)
-
+          description: Number as decimal string that represents expiry threshold in seconds from when the Request is submitted. When the threshold is reached and the Request does not find requested amount of nodes to host the data, the Request is voided. The number of seconds can not be higher then the Request's duration itself.
     StorageAsk:
       type: object
       required: