diff --git a/arangodb-net-standard/AqlFunctionApi/Models/PostExplainAqlQueryResponseIndex.cs b/arangodb-net-standard/AqlFunctionApi/Models/PostExplainAqlQueryResponseIndex.cs
index 990f7493..8eca0028 100644
--- a/arangodb-net-standard/AqlFunctionApi/Models/PostExplainAqlQueryResponseIndex.cs
+++ b/arangodb-net-standard/AqlFunctionApi/Models/PostExplainAqlQueryResponseIndex.cs
@@ -10,7 +10,7 @@ public class PostExplainAqlQueryResponseIndex
         public string Type { get; set; }
         public string Name { get; set; }
         public IEnumerable<string> Fields { get; set; }
-        public int? SelectivityEstimate { get; set; }
+        public double? SelectivityEstimate { get; set; }
         public bool? Unique { get; set; }
         public bool? Sparse { get; set; }
         public bool? Deduplicate { get; set; }
diff --git a/arangodb-net-standard/IndexApi/Models/IndexResponseBase.cs b/arangodb-net-standard/IndexApi/Models/IndexResponseBase.cs
index d2851fc9..bdf8b1bb 100644
--- a/arangodb-net-standard/IndexApi/Models/IndexResponseBase.cs
+++ b/arangodb-net-standard/IndexApi/Models/IndexResponseBase.cs
@@ -60,7 +60,7 @@ public class IndexResponseBase : ResponseBase
         /// <summary>
         /// The index selectivity estimate value for the index if <see cref="Estimates"/> is set to True.
         /// </summary>
-        public int? SelectivityEstimate { get; set; }
+        public double? SelectivityEstimate { get; set; }
 
         /// <summary>
         /// Supported by array indexes of type <see cref="IndexType.Persistent"/>.