diff --git a/rust/kcl-derive-docs/src/lib.rs b/rust/kcl-derive-docs/src/lib.rs
index da4a55e42..58c101326 100644
--- a/rust/kcl-derive-docs/src/lib.rs
+++ b/rust/kcl-derive-docs/src/lib.rs
@@ -797,7 +797,7 @@ fn generate_code_block_test(fn_name: &str, code_block: &str, index: usize) -> pr
             let ctx = crate::ExecutorContext {
                 engine: std::sync::Arc::new(Box::new(crate::engine::conn_mock::EngineConnection::new().await.unwrap())),
                 fs: std::sync::Arc::new(crate::fs::FileManager::new()),
-                stdlib: std::sync::Arc::new(tokio::sync::RwLock::new(crate::std::StdLib::new())),
+                stdlib: std::sync::Arc::new(crate::std::StdLib::new()),
                 settings: Default::default(),
                 context_type: crate::execution::ContextType::Mock,
             };
diff --git a/rust/kcl-lib/src/execution/exec_ast.rs b/rust/kcl-lib/src/execution/exec_ast.rs
index 524525100..3b5e7d6cd 100644
--- a/rust/kcl-lib/src/execution/exec_ast.rs
+++ b/rust/kcl-lib/src/execution/exec_ast.rs
@@ -1218,7 +1218,7 @@ impl Node<CallExpressionKw> {
             ctx.clone(),
             exec_state.mod_local.pipe_value.clone().map(|v| Arg::new(v, callsite)),
         );
-        match ctx.stdlib.read().await.get_either(fn_name) {
+        match ctx.stdlib.get_either(fn_name) {
             FunctionKind::Core(func) => {
                 if func.deprecated() {
                     exec_state.warn(CompilationError::err(
@@ -1370,7 +1370,7 @@ impl Node<CallExpression> {
         }
         let fn_args = fn_args; // remove mutability
 
-        match ctx.stdlib.read().await.get_either(fn_name) {
+        match ctx.stdlib.get_either(fn_name) {
             FunctionKind::Core(func) => {
                 if func.deprecated() {
                     exec_state.warn(CompilationError::err(
@@ -2229,7 +2229,7 @@ mod test {
         parsing::ast::types::{DefaultParamVal, Identifier, Parameter},
     };
     use std::sync::Arc;
-    use tokio::{io::AsyncWriteExt, sync::RwLock, task::JoinSet};
+    use tokio::{io::AsyncWriteExt, task::JoinSet};
 
     #[tokio::test(flavor = "multi_thread")]
     async fn test_assign_args_to_params() {
@@ -2348,7 +2348,7 @@ mod test {
                     crate::engine::conn_mock::EngineConnection::new().await.unwrap(),
                 )),
                 fs: Arc::new(crate::fs::FileManager::new()),
-                stdlib: Arc::new(RwLock::new(crate::std::StdLib::new())),
+                stdlib: Arc::new(crate::std::StdLib::new()),
                 settings: Default::default(),
                 context_type: ContextType::Mock,
             };
@@ -2515,11 +2515,11 @@ export c = a + 2
                     .unwrap(),
             )),
             fs: Arc::new(crate::fs::FileManager::new()),
-            stdlib: Arc::new(RwLock::new(crate::std::StdLib::new())),
             settings: ExecutorSettings {
                 project_directory: Some(tmpdir.path().into()),
                 ..Default::default()
             },
+            stdlib: Arc::new(crate::std::StdLib::new()),
             context_type: ContextType::Mock,
         };
         let mut exec_state = ExecState::new(&exec_ctxt);
diff --git a/rust/kcl-lib/src/execution/mod.rs b/rust/kcl-lib/src/execution/mod.rs
index d6b66cf59..812e0a8c2 100644
--- a/rust/kcl-lib/src/execution/mod.rs
+++ b/rust/kcl-lib/src/execution/mod.rs
@@ -27,7 +27,6 @@ pub use memory::EnvironmentRef;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 pub use state::{ExecState, MetaSettings};
-use tokio::sync::RwLock;
 
 use crate::{
     engine::EngineManager,
@@ -256,7 +255,7 @@ pub enum ContextType {
 pub struct ExecutorContext {
     pub engine: Arc<Box<dyn EngineManager>>,
     pub fs: Arc<FileManager>,
-    pub stdlib: Arc<RwLock<StdLib>>,
+    pub stdlib: Arc<StdLib>,
     pub settings: ExecutorSettings,
     pub context_type: ContextType,
 }
@@ -394,7 +393,7 @@ impl ExecutorContext {
         Ok(Self {
             engine,
             fs: Arc::new(FileManager::new()),
-            stdlib: Arc::new(RwLock::new(StdLib::new())),
+            stdlib: Arc::new(StdLib::new()),
             settings,
             context_type: ContextType::Live,
         })
@@ -413,7 +412,7 @@ impl ExecutorContext {
                     .map_err(|e| format!("{:?}", e))?,
             )),
             fs: Arc::new(FileManager::new(fs_manager)),
-            stdlib: Arc::new(RwLock::new(StdLib::new())),
+            stdlib: Arc::new(StdLib::new()),
             settings,
             context_type: ContextType::Live,
         })
@@ -426,7 +425,7 @@ impl ExecutorContext {
                 crate::engine::conn_mock::EngineConnection::new().await.unwrap(),
             )),
             fs: Arc::new(FileManager::new()),
-            stdlib: Arc::new(RwLock::new(StdLib::new())),
+            stdlib: Arc::new(StdLib::new()),
             settings: Default::default(),
             context_type: ContextType::Mock,
         }
@@ -444,7 +443,7 @@ impl ExecutorContext {
                     .map_err(|e| format!("{:?}", e))?,
             )),
             fs: Arc::new(FileManager::new(fs_manager)),
-            stdlib: Arc::new(RwLock::new(StdLib::new())),
+            stdlib: Arc::new(StdLib::new()),
             settings,
             context_type: ContextType::Mock,
         })
@@ -455,7 +454,7 @@ impl ExecutorContext {
         ExecutorContext {
             engine,
             fs: Arc::new(FileManager::new()),
-            stdlib: Arc::new(RwLock::new(StdLib::new())),
+            stdlib: Arc::new(StdLib::new()),
             settings: Default::default(),
             context_type: ContextType::MockCustomForwarded,
         }
@@ -973,7 +972,7 @@ pub(crate) async fn parse_execute(code: &str) -> Result<ExecTestResults, KclErro
             })?,
         )),
         fs: Arc::new(crate::fs::FileManager::new()),
-        stdlib: Arc::new(RwLock::new(crate::std::StdLib::new())),
+        stdlib: Arc::new(crate::std::StdLib::new()),
         settings: Default::default(),
         context_type: ContextType::Mock,
     };