diff --git a/Cargo.lock b/Cargo.lock
index 35e67986..cbc246dc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -526,7 +526,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d045de693cb712d0b22c6a64be5b953f67b3ce00ab5ad3dd5d8b441886ab8e1a"
 dependencies = [
  "quote",
- "syn 3.0.6",
+ "syn 2.0.119",
 ]
 
 [[package]]
@@ -1354,7 +1354,7 @@ dependencies = [
 [[package]]
 name = "music21-rs"
 version = "0.6.0"
-source = "git+https://github.com/float3/music21-rs.git#f17bf801337c3ebdac49622f6c1190b7a2536f0f"
+source = "git+https://github.com/float3/music21-rs.git#2dc7d6812c5ccfd82367ec2bc9ac5168ea913c32"
 dependencies = [
  "fraction",
  "itertools 0.15.0",