diff --git a/Cargo.lock b/Cargo.lock
index d724d8962a..9ddbeac477 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1182,7 +1182,6 @@ dependencies = [
  "log",
  "serde",
  "serde_json",
- "serde_stacker",
  "tt",
 ]
 
@@ -1240,15 +1239,6 @@ dependencies = [
  "toolchain",
 ]
 
-[[package]]
-name = "psm"
-version = "0.1.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3abf49e5417290756acfd26501536358560c4a5cc4a0934d390939acb3e7083a"
-dependencies = [
- "cc",
-]
-
 [[package]]
 name = "pulldown-cmark"
 version = "0.8.0"
@@ -1567,16 +1557,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "serde_stacker"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4c92391a63e3b83f77334d8beaaf11bac4c900f3769483e543bf76a81bf8ee2"
-dependencies = [
- "serde",
- "stacker",
-]
-
 [[package]]
 name = "sharded-slab"
 version = "0.1.0"
@@ -1622,19 +1602,6 @@ dependencies = [
  "text_edit",
 ]
 
-[[package]]
-name = "stacker"
-version = "0.1.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21ccb4c06ec57bc82d0f610f1a2963d7648700e43a6f513e564b9c89f7991786"
-dependencies = [
- "cc",
- "cfg-if 0.1.10",
- "libc",
- "psm",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "stdx"
 version = "0.0.0"
diff --git a/crates/proc_macro_api/Cargo.toml b/crates/proc_macro_api/Cargo.toml
index a8e128d557..1af2bbca78 100644
--- a/crates/proc_macro_api/Cargo.toml
+++ b/crates/proc_macro_api/Cargo.toml
@@ -12,7 +12,6 @@ doctest = false
 [dependencies]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-serde_stacker = "0.1"
 log = "0.4.8"
 crossbeam-channel = "0.5.0"
 jod-thread = "0.1.1"
diff --git a/crates/proc_macro_api/src/msg.rs b/crates/proc_macro_api/src/msg.rs
index 43d13a764c..4cd5721016 100644
--- a/crates/proc_macro_api/src/msg.rs
+++ b/crates/proc_macro_api/src/msg.rs
@@ -63,8 +63,7 @@ pub trait Message: Serialize + DeserializeOwned {
                 // Note that some proc-macro generate very deep syntax tree
                 // We have to disable the current limit of serde here
                 deserializer.disable_recursion_limit();
-                let deserializer = serde_stacker::Deserializer::new(&mut deserializer);
-                Some(Self::deserialize(deserializer)?)
+                Some(Self::deserialize(&mut deserializer)?)
             }
         })
     }