diff --git a/src/codec/context.rs b/src/codec/context.rs
index bbaae35..8d2e266 100644
--- a/src/codec/context.rs
+++ b/src/codec/context.rs
@@ -1,4 +1,4 @@
-use std::{ptr, rc::Rc};
+use std::{any::Any, ptr, rc::Rc};
 
 use libc::c_int;
 
@@ -9,13 +9,13 @@ use crate::{ffi::*, media, Codec, Error, Rational};
 
 pub struct Context {
 	ptr: *mut AVCodecContext,
-	owner: Option<Rc<dyn Drop>>,
+	owner: Option<Rc<dyn Any>>,
 }
 
 unsafe impl Send for Context {}
 
 impl Context {
-	pub unsafe fn wrap(ptr: *mut AVCodecContext, owner: Option<Rc<dyn Drop>>) -> Self {
+	pub unsafe fn wrap(ptr: *mut AVCodecContext, owner: Option<Rc<dyn Any>>) -> Self {
 		Context { ptr, owner }
 	}
 
diff --git a/src/codec/parameters.rs b/src/codec/parameters.rs
index aa59a8d..8c974d3 100644
--- a/src/codec/parameters.rs
+++ b/src/codec/parameters.rs
@@ -1,17 +1,17 @@
-use std::rc::Rc;
+use std::{any::Any, ops::Deref, rc::Rc};
 
 use super::{Context, Id};
 use crate::{ffi::*, media};
 
 pub struct Parameters {
 	ptr: *mut AVCodecParameters,
-	owner: Option<Rc<dyn Drop>>,
+	owner: Option<Rc<dyn Any>>,
 }
 
 unsafe impl Send for Parameters {}
 
 impl Parameters {
-	pub unsafe fn wrap(ptr: *mut AVCodecParameters, owner: Option<Rc<dyn Drop>>) -> Self {
+	pub unsafe fn wrap(ptr: *mut AVCodecParameters, owner: Option<Rc<dyn Any>>) -> Self {
 		Parameters { ptr, owner }
 	}