diff --git a/Cargo.lock b/Cargo.lock
index 1cd39d7..26c8f89 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -202,7 +202,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "scratch",
- "syn 2.0.11",
+ "syn",
 ]
 
 [[package]]
@@ -219,7 +219,7 @@ checksum = "2345488264226bf682893e25de0769f3360aac9957980ec49361b083ddaa5bc5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.11",
+ "syn",
 ]
 
 [[package]]
@@ -385,7 +385,7 @@ version = "0.1.1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn",
 ]
 
 [[package]]
@@ -517,7 +517,7 @@ checksum = "4c614d17805b093df4b147b51339e7e44bf05ef59fba1e45d83500bcfb4d8585"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.11",
+ "syn",
 ]
 
 [[package]]
@@ -550,17 +550,6 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.11"
diff --git a/crates/pacdef_macros/Cargo.toml b/crates/pacdef_macros/Cargo.toml
index e3463ca..a10d334 100644
--- a/crates/pacdef_macros/Cargo.toml
+++ b/crates/pacdef_macros/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["command-line-utilities"]
 [dependencies]
 proc-macro2 = "1.0"
 quote = "1.0"
-syn = "1.0"
+syn = "2.0"
 
 [lib]
 proc-macro = true