diff --git a/Cargo.toml b/Cargo.toml
index ea172cf5..3262b6e0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,13 +26,13 @@ log = ["dep:log"]
 [dependencies]
 log = { version = "0.4", optional = true }
 unicode-id = { version = "0.3", features = ["no_std"] }
-serde = { version = "1.0", features = ["derive"], optional = true }
+serde = { version = "1", features = ["derive"], optional = true }
 
 [dev-dependencies]
 env_logger = "0.11"
 criterion = "0.5"
 pretty_assertions = "1"
-swc_core = { version = "0.93.0", features = [
+swc_core = { version = "0.100", features = [
   "ecma_ast",
   "ecma_visit",
   "ecma_parser",
diff --git a/tests/mdx_expression_text.rs b/tests/mdx_expression_text.rs
index 2590c2d8..8ecfba7d 100644
--- a/tests/mdx_expression_text.rs
+++ b/tests/mdx_expression_text.rs
@@ -67,7 +67,7 @@ fn mdx_expression_text_gnostic_core() -> Result<(), message::Message> {
             .err()
             .unwrap()
             .to_string(),
-        "1:4: Could not parse expression with swc: Unexpected eof (mdx:swc)",
+        "1:9: Could not parse expression with swc: Unexpected eof (mdx:swc)",
         "should crash on an incorrect line comment (1)"
     );
 
@@ -76,7 +76,7 @@ fn mdx_expression_text_gnostic_core() -> Result<(), message::Message> {
             .err()
             .unwrap()
             .to_string(),
-        "1:4: Could not parse expression with swc: Unexpected eof (mdx:swc)",
+        "1:13: Could not parse expression with swc: Unexpected eof (mdx:swc)",
         "should crash on an incorrect line comment (2)"
     );
 
diff --git a/tests/test_utils/swc.rs b/tests/test_utils/swc.rs
index fb4b71e8..5a930466 100644
--- a/tests/test_utils/swc.rs
+++ b/tests/test_utils/swc.rs
@@ -7,12 +7,12 @@ use markdown::{MdxExpressionKind, MdxSignal};
 use std::rc::Rc;
 use swc_core::common::{
     comments::{Comment, SingleThreadedComments, SingleThreadedCommentsMap},
-    source_map::Pos,
+    source_map::SmallPos,
     BytePos, FileName, SourceFile, Span, Spanned,
 };
 use swc_core::ecma::ast::{EsVersion, Expr, Module, PropOrSpread};
 use swc_core::ecma::parser::{
-    error::Error as SwcError, parse_file_as_expr, parse_file_as_module, EsConfig, Syntax,
+    error::Error as SwcError, parse_file_as_expr, parse_file_as_module, EsSyntax, Syntax,
 };
 use swc_core::ecma::visit::VisitMutWith;
 
@@ -268,16 +268,16 @@ fn create_config(source: String) -> (SourceFile, Syntax, EsVersion) {
     (
         // File.
         SourceFile::new(
-            FileName::Anon,
+            FileName::Anon.into(),
             false,
-            FileName::Anon,
+            FileName::Anon.into(),
             source,
             BytePos::from_usize(1),
         ),
         // Syntax.
-        Syntax::Es(EsConfig {
+        Syntax::Es(EsSyntax {
             jsx: true,
-            ..EsConfig::default()
+            ..EsSyntax::default()
         }),
         // Version.
         // To do: update once in a while (last checked: 2024-04-18).
diff --git a/tests/test_utils/swc_utils.rs b/tests/test_utils/swc_utils.rs
index 326550b1..b161f6c7 100644
--- a/tests/test_utils/swc_utils.rs
+++ b/tests/test_utils/swc_utils.rs
@@ -1,7 +1,7 @@
 //! Lots of helpers for dealing with SWC, particularly from unist, and for
 //! building its ES AST.
 
-use swc_core::common::{BytePos, Span, SyntaxContext, DUMMY_SP};
+use swc_core::common::{BytePos, Span, DUMMY_SP};
 use swc_core::ecma::visit::{noop_visit_mut_type, VisitMut};
 
 /// Visitor to fix SWC byte positions by removing a prefix.
@@ -33,6 +33,5 @@ pub fn create_span(lo: u32, hi: u32) -> Span {
     Span {
         lo: BytePos(lo),
         hi: BytePos(hi),
-        ctxt: SyntaxContext::default(),
     }
 }