diff --git a/include/ircd/ctx/promise.h b/include/ircd/ctx/promise.h
index 040bf6c0d..5f47d605e 100644
--- a/include/ircd/ctx/promise.h
+++ b/include/ircd/ctx/promise.h
@@ -68,7 +68,7 @@ struct ircd::ctx::promise_base
 	promise_base(promise_base &&) noexcept;
 	promise_base &operator=(const promise_base &);
 	promise_base &operator=(promise_base &&) noexcept;
-	~promise_base() noexcept;
+	virtual ~promise_base() noexcept;
 };
 
 /// Value-oriented promise. The user creates an instance of this promise in
diff --git a/include/ircd/ctx/shared_state.h b/include/ircd/ctx/shared_state.h
index c53be1e32..07dafeb5e 100644
--- a/include/ircd/ctx/shared_state.h
+++ b/include/ircd/ctx/shared_state.h
@@ -64,7 +64,7 @@ struct ircd::ctx::shared_state_base
 	shared_state_base(const shared_state_base &) = delete;
 	shared_state_base &operator=(shared_state_base &&) = default;
 	shared_state_base &operator=(const shared_state_base &) = delete;
-	~shared_state_base() noexcept;
+	virtual ~shared_state_base() noexcept;
 };
 
 /// Internal shared state between future and promise appropos a future value.