diff --git a/src/Stripe.net/Services/_interfaces/ICreatable.cs b/src/Stripe.net/Services/_interfaces/ICreatable.cs
index d71b79d2e6..16e5c6b5a5 100644
--- a/src/Stripe.net/Services/_interfaces/ICreatable.cs
+++ b/src/Stripe.net/Services/_interfaces/ICreatable.cs
@@ -5,7 +5,7 @@ namespace Stripe
 
     public interface ICreatable<TEntity, TOptions>
         where TEntity : IStripeEntity
-        where TOptions : BaseOptions
+        where TOptions : BaseOptions, new()
     {
         TEntity Create(TOptions createOptions, RequestOptions requestOptions = null);
 
diff --git a/src/Stripe.net/Services/_interfaces/IListable.cs b/src/Stripe.net/Services/_interfaces/IListable.cs
index 49ff7fed3b..9008c5453f 100644
--- a/src/Stripe.net/Services/_interfaces/IListable.cs
+++ b/src/Stripe.net/Services/_interfaces/IListable.cs
@@ -6,7 +6,7 @@ namespace Stripe
 
     public interface IListable<TEntity, TOptions>
         where TEntity : IStripeEntity, IHasId
-        where TOptions : ListOptions
+        where TOptions : ListOptions, new()
     {
         StripeList<TEntity> List(TOptions listOptions = null, RequestOptions requestOptions = null);
 
diff --git a/src/Stripe.net/Services/_interfaces/INestedCreatable.cs b/src/Stripe.net/Services/_interfaces/INestedCreatable.cs
index ee7045d52a..ca618bddad 100644
--- a/src/Stripe.net/Services/_interfaces/INestedCreatable.cs
+++ b/src/Stripe.net/Services/_interfaces/INestedCreatable.cs
@@ -5,7 +5,7 @@ namespace Stripe
 
     public interface INestedCreatable<TEntity, TOptions>
         where TEntity : IStripeEntity
-        where TOptions : BaseOptions
+        where TOptions : BaseOptions, new()
     {
         TEntity Create(string parentId, TOptions createOptions, RequestOptions requestOptions = null);
 
diff --git a/src/Stripe.net/Services/_interfaces/INestedListable.cs b/src/Stripe.net/Services/_interfaces/INestedListable.cs
index 7cd4042149..9c100ae04f 100644
--- a/src/Stripe.net/Services/_interfaces/INestedListable.cs
+++ b/src/Stripe.net/Services/_interfaces/INestedListable.cs
@@ -6,7 +6,7 @@ namespace Stripe
 
     public interface INestedListable<TEntity, TOptions>
         where TEntity : IStripeEntity, IHasId
-        where TOptions : ListOptions
+        where TOptions : ListOptions, new()
     {
         StripeList<TEntity> List(string parentId, TOptions listOptions = null, RequestOptions requestOptions = null);
 
diff --git a/src/Stripe.net/Services/_interfaces/INestedRetrievable.cs b/src/Stripe.net/Services/_interfaces/INestedRetrievable.cs
index d3d39a3e43..c70b9b932a 100644
--- a/src/Stripe.net/Services/_interfaces/INestedRetrievable.cs
+++ b/src/Stripe.net/Services/_interfaces/INestedRetrievable.cs
@@ -5,7 +5,7 @@ namespace Stripe
 
     public interface INestedRetrievable<TEntity, TOptions>
         where TEntity : IStripeEntity, IHasId
-        where TOptions : BaseOptions
+        where TOptions : BaseOptions, new()
     {
         TEntity Get(string parentId, string id, TOptions retrieveOptions, RequestOptions requestOptions = null);
 
diff --git a/src/Stripe.net/Services/_interfaces/INestedUpdatable.cs b/src/Stripe.net/Services/_interfaces/INestedUpdatable.cs
index b6ec98ca5d..bee441245b 100644
--- a/src/Stripe.net/Services/_interfaces/INestedUpdatable.cs
+++ b/src/Stripe.net/Services/_interfaces/INestedUpdatable.cs
@@ -5,7 +5,7 @@ namespace Stripe
 
     public interface INestedUpdatable<TEntity, TOptions>
         where TEntity : IStripeEntity, IHasId
-        where TOptions : BaseOptions
+        where TOptions : BaseOptions, new()
     {
         TEntity Update(string parentId, string id, TOptions updateOptions, RequestOptions requestOptions = null);
 
diff --git a/src/Stripe.net/Services/_interfaces/IRetrievable.cs b/src/Stripe.net/Services/_interfaces/IRetrievable.cs
index 7b8be8c9ec..af715a452e 100644
--- a/src/Stripe.net/Services/_interfaces/IRetrievable.cs
+++ b/src/Stripe.net/Services/_interfaces/IRetrievable.cs
@@ -5,7 +5,7 @@ namespace Stripe
 
     public interface IRetrievable<TEntity, TOptions>
         where TEntity : IStripeEntity, IHasId
-        where TOptions : BaseOptions
+        where TOptions : BaseOptions, new()
     {
         TEntity Get(string id, TOptions retrieveOptions, RequestOptions requestOptions = null);
 
diff --git a/src/Stripe.net/Services/_interfaces/IUpdatable.cs b/src/Stripe.net/Services/_interfaces/IUpdatable.cs
index 526a151eae..7c37468ca1 100644
--- a/src/Stripe.net/Services/_interfaces/IUpdatable.cs
+++ b/src/Stripe.net/Services/_interfaces/IUpdatable.cs
@@ -5,7 +5,7 @@ namespace Stripe
 
     public interface IUpdatable<TEntity, TOptions>
         where TEntity : IStripeEntity, IHasId
-        where TOptions : BaseOptions
+        where TOptions : BaseOptions, new()
     {
         TEntity Update(string id, TOptions updateOptions, RequestOptions requestOptions = null);