diff --git a/ext/node/ops/blocklist.rs b/ext/node/ops/blocklist.rs
index 87594f74ce2b84..b853a572337f7f 100644
--- a/ext/node/ops/blocklist.rs
+++ b/ext/node/ops/blocklist.rs
@@ -1,5 +1,6 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
+use std::cell::RefCell;
 use std::collections::HashSet;
 use std::net::IpAddr;
 use std::net::Ipv4Addr;
@@ -17,6 +18,12 @@ use ipnetwork::Ipv4Network;
 use ipnetwork::Ipv6Network;
 use serde::Serialize;
 
+pub struct BlockListResource {
+  blocklist: RefCell<BlockList>,
+}
+
+impl deno_core::GcResource for BlockListResource {}
+
 #[derive(Serialize)]
 struct SocketAddressSerialization(String, String);
 
@@ -59,51 +66,52 @@ pub fn op_socket_address_get_serialization(
 
 #[op2]
 #[cppgc]
-pub fn op_blocklist_new() -> BlockList {
-  BlockList::new()
+pub fn op_blocklist_new() -> BlockListResource {
+  let blocklist = BlockList::new();
+  BlockListResource {
+    blocklist: RefCell::new(blocklist),
+  }
 }
 
 #[op2(fast)]
 pub fn op_blocklist_add_address(
-  #[cppgc] blocklist: &mut BlockList,
+  #[cppgc] wrap: &BlockListResource,
   #[string] addr: &str,
 ) -> Result<(), AnyError> {
-  blocklist.add_address(addr)
+  wrap.blocklist.borrow_mut().add_address(addr)
 }
 
 #[op2(fast)]
 pub fn op_blocklist_add_range(
-  #[cppgc] blocklist: &mut BlockList,
+  #[cppgc] wrap: &BlockListResource,
   #[string] start: &str,
   #[string] end: &str,
 ) -> Result<bool, AnyError> {
-  blocklist.add_range(start, end)
+  wrap.blocklist.borrow_mut().add_range(start, end)
 }
 
 #[op2(fast)]
 pub fn op_blocklist_add_subnet(
-  #[cppgc] blocklist: &mut BlockList,
+  #[cppgc] wrap: &BlockListResource,
   #[string] addr: &str,
   #[smi] prefix: u8,
 ) -> Result<(), AnyError> {
-  blocklist.add_subnet(addr, prefix)
+  wrap.blocklist.borrow_mut().add_subnet(addr, prefix)
 }
 
 #[op2(fast)]
 pub fn op_blocklist_check(
-  #[cppgc] blocklist: &BlockList,
+  #[cppgc] wrap: &BlockListResource,
   #[string] addr: &str,
-  #[string] type_: &str,
+  #[string] r#type: &str,
 ) -> Result<bool, AnyError> {
-  blocklist.check(addr, type_)
+  wrap.blocklist.borrow().check(addr, r#type)
 }
 
 struct BlockList {
   rules: HashSet<IpNetwork>,
 }
 
-impl deno_core::GcResource for BlockList {}
-
 impl BlockList {
   pub fn new() -> Self {
     BlockList {
diff --git a/ext/node/ops/zlib/mod.rs b/ext/node/ops/zlib/mod.rs
index 7eabc3f09c221f..9e030176abf9fd 100644
--- a/ext/node/ops/zlib/mod.rs
+++ b/ext/node/ops/zlib/mod.rs
@@ -2,6 +2,8 @@
 use deno_core::error::type_error;
 use deno_core::error::AnyError;
 use deno_core::op2;
+use std::borrow::Cow;
+use std::cell::RefCell;
 use zlib::*;
 
 mod alloc;
@@ -228,17 +230,17 @@ impl ZlibInner {
 }
 
 struct Zlib {
-  inner: Option<ZlibInner>,
+  inner: RefCell<Option<ZlibInner>>,
 }
 
-impl Zlib {
-  fn as_mut(&mut self) -> Option<&mut ZlibInner> {
-    self.inner.as_mut()
+impl deno_core::GcResource for Zlib {}
+
+impl deno_core::Resource for Zlib {
+  fn name(&self) -> Cow<str> {
+    "zlib".into()
   }
 }
 
-impl deno_core::GcResource for Zlib {}
-
 #[op2]
 #[cppgc]
 pub fn op_zlib_new(#[smi] mode: i32) -> Result<Zlib, AnyError> {
@@ -249,12 +251,15 @@ pub fn op_zlib_new(#[smi] mode: i32) -> Result<Zlib, AnyError> {
     ..Default::default()
   };
 
-  Ok(Zlib { inner: Some(inner) })
+  Ok(Zlib {
+    inner: RefCell::new(Some(inner)),
+  })
 }
 
 #[op2(fast)]
-pub fn op_zlib_close(#[cppgc] zlib: &mut Zlib) -> Result<(), AnyError> {
-  let zlib = zlib
+pub fn op_zlib_close(#[cppgc] resource: &Zlib) -> Result<(), AnyError> {
+  let mut resource = resource.inner.borrow_mut();
+  let zlib = resource
     .as_mut()
     .ok_or_else(|| type_error("zlib not initialized"))?;
 
@@ -268,7 +273,7 @@ pub fn op_zlib_close(#[cppgc] zlib: &mut Zlib) -> Result<(), AnyError> {
 #[op2(fast)]
 #[smi]
 pub fn op_zlib_write(
-  #[cppgc] zlib: &mut Zlib,
+  #[cppgc] resource: &Zlib,
   #[smi] flush: i32,
   #[buffer] input: &[u8],
   #[smi] in_off: u32,
@@ -278,6 +283,7 @@ pub fn op_zlib_write(
   #[smi] out_len: u32,
   #[buffer] result: &mut [u32],
 ) -> Result<i32, AnyError> {
+  let mut zlib = resource.inner.borrow_mut();
   let zlib = zlib
     .as_mut()
     .ok_or_else(|| type_error("zlib not initialized"))?;
@@ -295,13 +301,14 @@ pub fn op_zlib_write(
 #[op2(fast)]
 #[smi]
 pub fn op_zlib_init(
-  #[cppgc] zlib: &mut Zlib,
+  #[cppgc] resource: &Zlib,
   #[smi] level: i32,
   #[smi] window_bits: i32,
   #[smi] mem_level: i32,
   #[smi] strategy: i32,
   #[buffer] dictionary: &[u8],
 ) -> Result<i32, AnyError> {
+  let mut zlib = resource.inner.borrow_mut();
   let zlib = zlib
     .as_mut()
     .ok_or_else(|| type_error("zlib not initialized"))?;
@@ -341,7 +348,8 @@ pub fn op_zlib_init(
 
 #[op2(fast)]
 #[smi]
-pub fn op_zlib_reset(#[cppgc] zlib: &mut Zlib) -> Result<i32, AnyError> {
+pub fn op_zlib_reset(#[cppgc] resource: &Zlib) -> Result<i32, AnyError> {
+  let mut zlib = resource.inner.borrow_mut();
   let zlib = zlib
     .as_mut()
     .ok_or_else(|| type_error("zlib not initialized"))?;
@@ -353,9 +361,10 @@ pub fn op_zlib_reset(#[cppgc] zlib: &mut Zlib) -> Result<i32, AnyError> {
 
 #[op2(fast)]
 pub fn op_zlib_close_if_pending(
-  #[cppgc] zlib: &mut Zlib,
+  #[cppgc] resource: &Zlib,
 ) -> Result<(), AnyError> {
   let pending_close = {
+    let mut zlib = resource.inner.borrow_mut();
     let zlib = zlib
       .as_mut()
       .ok_or_else(|| type_error("zlib not initialized"))?;
@@ -364,7 +373,7 @@ pub fn op_zlib_close_if_pending(
     zlib.pending_close
   };
   if pending_close {
-    if let Some(mut res) = zlib.inner.take() {
+    if let Some(mut res) = resource.inner.borrow_mut().take() {
       let _ = res.close();
     }
   }