diff --git a/core/lib.rs b/core/lib.rs
index 8014af2e3..5d246f3e5 100644
--- a/core/lib.rs
+++ b/core/lib.rs
@@ -161,8 +161,6 @@ pub use crate::runtime::MODULE_MAP_SLOT_INDEX;
 pub use crate::runtime::V8_WRAPPER_OBJECT_INDEX;
 pub use crate::runtime::V8_WRAPPER_TYPE_INDEX;
 pub use crate::source_map::SourceMapData;
-#[allow(deprecated)]
-pub use crate::source_map::SourceMapGetter;
 pub use crate::tasks::V8CrossThreadTaskSpawner;
 pub use crate::tasks::V8TaskSpawner;
 
diff --git a/core/runtime/jsruntime.rs b/core/runtime/jsruntime.rs
index 6d40d1ef6..9ea3ed767 100644
--- a/core/runtime/jsruntime.rs
+++ b/core/runtime/jsruntime.rs
@@ -45,8 +45,6 @@ use crate::runtime::ContextState;
 use crate::runtime::JsRealm;
 use crate::runtime::OpDriverImpl;
 use crate::source_map::SourceMapData;
-#[allow(deprecated)]
-use crate::source_map::SourceMapGetter;
 use crate::source_map::SourceMapper;
 use crate::stats::RuntimeActivityType;
 use crate::Extension;
@@ -443,11 +441,6 @@ pub struct JsRuntimeState {
 
 #[derive(Default)]
 pub struct RuntimeOptions {
-  /// Source map reference for errors.
-  #[deprecated = "Update `ModuleLoader` trait implementations. This option will be removed in deno_core v0.300.0."]
-  #[allow(deprecated)]
-  pub source_map_getter: Option<Rc<dyn SourceMapGetter>>,
-
   /// Allows to map error type to a string "class" used to represent
   /// error in JavaScript.
   pub get_error_class_fn: Option<GetErrorClassFn>,
@@ -694,9 +687,7 @@ impl JsRuntime {
       .module_loader
       .unwrap_or_else(|| Rc::new(NoopModuleLoader));
 
-    #[allow(deprecated)]
-    let mut source_mapper =
-      SourceMapper::new(loader.clone(), options.source_map_getter);
+    let mut source_mapper = SourceMapper::new(loader.clone());
 
     let mut sources = extension_set::into_sources_and_source_maps(
       options.extension_transpiler.as_deref(),
diff --git a/core/source_map.rs b/core/source_map.rs
index 3e0dedf5a..316eac77d 100644
--- a/core/source_map.rs
+++ b/core/source_map.rs
@@ -2,9 +2,6 @@
 
 //! This mod provides functions to remap a `JsError` based on a source map.
 
-// TODO(bartlomieju): remove once `SourceMapGetter` is removed.
-#![allow(deprecated)]
-
 use crate::resolve_url;
 use crate::ModuleLoader;
 use crate::ModuleName;
@@ -14,17 +11,6 @@ use std::collections::HashMap;
 use std::rc::Rc;
 use std::str;
 
-#[deprecated = "Use `ModuleLoader` methods instead. This trait will be removed in deno_core v0.300.0."]
-pub trait SourceMapGetter {
-  /// Returns the raw source map file.
-  fn get_source_map(&self, file_name: &str) -> Option<Vec<u8>>;
-  fn get_source_line(
-    &self,
-    file_name: &str,
-    line_number: usize,
-  ) -> Option<String>;
-}
-
 #[derive(Debug, PartialEq)]
 pub enum SourceMapApplication {
   /// No mapping was applied, the location is unchanged.
@@ -51,22 +37,17 @@ pub struct SourceMapper {
   source_lines: HashMap<(String, i64), Option<String>>,
 
   loader: Rc<dyn ModuleLoader>,
-  getter: Option<Rc<dyn SourceMapGetter>>,
 
   ext_source_maps: HashMap<ModuleName, SourceMapData>,
 }
 
 impl SourceMapper {
-  pub fn new(
-    loader: Rc<dyn ModuleLoader>,
-    getter: Option<Rc<dyn SourceMapGetter>>,
-  ) -> Self {
+  pub fn new(loader: Rc<dyn ModuleLoader>) -> Self {
     Self {
       maps: Default::default(),
       source_lines: Default::default(),
       ext_source_maps: Default::default(),
       loader,
-      getter,
     }
   }
 
@@ -100,7 +81,6 @@ impl SourceMapper {
     let line_number = line_number - 1;
     let column_number = column_number - 1;
 
-    let getter = self.getter.as_ref();
     let maybe_source_map =
       self.maps.entry(file_name.to_owned()).or_insert_with(|| {
         None
@@ -110,9 +90,6 @@ impl SourceMapper {
           .or_else(|| {
             SourceMap::from_slice(&self.loader.get_source_map(file_name)?).ok()
           })
-          .or_else(|| {
-            SourceMap::from_slice(&getter?.get_source_map(file_name)?).ok()
-          })
       });
 
     let Some(source_map) = maybe_source_map.as_ref() else {
@@ -172,24 +149,9 @@ impl SourceMapper {
       return maybe_source_line.clone();
     }
 
-    // TODO(bartlomieju): shouldn't we cache `None` values to avoid computing it each time, instead of early return?
-    if let Some(source_line) = self
+    let s = self
       .loader
-      .get_source_mapped_source_line(file_name, (line_number - 1) as usize)
-      .filter(|s| s.len() <= Self::MAX_SOURCE_LINE_LENGTH)
-    {
-      // Cache and return
-      self.source_lines.insert(
-        (file_name.to_string(), line_number),
-        Some(source_line.to_string()),
-      );
-      return Some(source_line);
-    }
-
-    // TODO(bartlomieju): remove in deno_core 0.230.0
-    // Fallback to a deprecated API
-    let getter = self.getter.as_ref()?;
-    let s = getter.get_source_line(file_name, (line_number - 1) as usize);
+      .get_source_mapped_source_line(file_name, (line_number - 1) as usize);
     let maybe_source_line =
       s.filter(|s| s.len() <= Self::MAX_SOURCE_LINE_LENGTH);
     // Cache and return
@@ -275,7 +237,7 @@ mod tests {
       },
     );
 
-    let mut source_mapper = SourceMapper::new(Rc::new(loader), None);
+    let mut source_mapper = SourceMapper::new(Rc::new(loader));
 
     // Non-existent file
     let application =