diff --git a/src/source.rs b/src/source.rs
index 937ece4..d965ff0 100644
--- a/src/source.rs
+++ b/src/source.rs
@@ -208,6 +208,8 @@ pub struct SourceMap {
   source_root: Option<Arc<str>>,
   #[serde(rename = "debugId", skip_serializing_if = "Option::is_none")]
   debug_id: Option<Arc<str>>,
+  #[serde(rename = "ignoreList", skip_serializing_if = "Option::is_none")]
+  ignore_list: Option<Vec<u32>>,
 }
 
 impl Hash for SourceMap {
@@ -218,6 +220,7 @@ impl Hash for SourceMap {
     self.sources_content.hash(state);
     self.names.hash(state);
     self.source_root.hash(state);
+    self.ignore_list.hash(state);
   }
 }
 
@@ -244,6 +247,7 @@ impl SourceMap {
       names: names.into(),
       source_root: None,
       debug_id: None,
+      ignore_list: None,
     }
   }
 
@@ -257,6 +261,16 @@ impl SourceMap {
     self.file = file.map(Into::into);
   }
 
+  /// Get the ignoreList field in [SourceMap].
+  pub fn ignore_list(&self) -> Option<&Vec<u32>> {
+    self.ignore_list.as_ref()
+  }
+
+  /// Set the ignoreList field in [SourceMap].
+  pub fn set_ignore_list(&mut self, ignore_list: Option<Vec<u32>>) {
+    self.ignore_list = ignore_list;
+  }
+
   /// Get the decoded mappings in [SourceMap].
   pub fn decoded_mappings(&self) -> impl Iterator<Item = Mapping> + '_ {
     decode_mappings(self)
@@ -348,6 +362,8 @@ struct RawSourceMap {
   pub mappings: String,
   #[serde(rename = "debugId")]
   pub debug_id: Option<String>,
+  #[serde(rename = "ignoreList")]
+  pub ignore_list: Option<Vec<u32>>,
 }
 
 impl RawSourceMap {
@@ -437,6 +453,7 @@ impl TryFrom<RawSourceMap> for SourceMap {
       names,
       source_root,
       debug_id,
+      ignore_list: raw.ignore_list,
     })
   }
 }