diff --git a/app/webhooks/stripe_charge_succeeded_processor.rb b/app/webhooks/stripe_charge_succeeded_processor.rb
index 6114a5e83..5e589cff6 100644
--- a/app/webhooks/stripe_charge_succeeded_processor.rb
+++ b/app/webhooks/stripe_charge_succeeded_processor.rb
@@ -2,7 +2,10 @@ class StripeChargeSucceededProcessor
   def call(event)
     stripe_charge = event.data.object
     return unless stripe_charge.paid
-    return if stripe_charge.subscription.present?
+    # Subscription (membership) charges carry an invoice and are recorded via the
+    # membership/invoice flow — skip them here. Newer Stripe API versions dropped
+    # Charge#subscription, so detect them by the presence of an invoice.
+    return if stripe_charge.invoice.present?
 
     return if Payment.exists?(stripe_charge_id: stripe_charge.id)
 
diff --git a/spec/webhooks/stripe_charge_succeeded_processor_spec.rb b/spec/webhooks/stripe_charge_succeeded_processor_spec.rb
index 9c1d3afe3..806059e51 100644
--- a/spec/webhooks/stripe_charge_succeeded_processor_spec.rb
+++ b/spec/webhooks/stripe_charge_succeeded_processor_spec.rb
@@ -18,7 +18,7 @@
       billing_details: nil,
       receipt_email: nil,
       customer: nil,
-      subscription: nil,
+      invoice: nil,
       to_hash: { "id" => stripe_charge_id, "amount" => 30_00 }
     )
   end
@@ -47,8 +47,8 @@
       expect { processor.call(event) }.not_to change(ExternalProcessorPayment, :count)
     end
 
-    it "does nothing when the charge belongs to a subscription" do
-      allow(stripe_charge).to receive(:subscription).and_return("sub_membership")
+    it "does nothing when the charge belongs to a subscription (has an invoice)" do
+      allow(stripe_charge).to receive(:invoice).and_return("in_membership")
 
       expect { processor.call(event) }.not_to change(ExternalProcessorPayment, :count)
     end