diff --git a/.gitignore b/.gitignore
index 0418204..d6d7ce9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -137,3 +137,4 @@
 /syn-2.0.60.crate
 /syn-2.0.61.crate
 /syn-2.0.64.crate
+/syn-2.0.66.crate
diff --git a/rust-syn.spec b/rust-syn.spec
index 2b61147..a96c911 100644
--- a/rust-syn.spec
+++ b/rust-syn.spec
@@ -6,7 +6,7 @@
 %global crate syn
 
 Name:           rust-syn
-Version:        2.0.64
+Version:        2.0.66
 Release:        %autorelease
 Summary:        Parser for Rust source code
 
diff --git a/sources b/sources
index 0002865..61eb278 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (syn-2.0.64.crate) = 078fbe2040c815f903df7e5d5dce769a538d7c063c6723620747640e7e902704cc5a30866b5ea78416cb11096ed8bb232d8ba1cfa7b8a680e96d2b2f9a4085ba
+SHA512 (syn-2.0.66.crate) = 60a617bfd37d74c52e4d4d63ef0a27a2f9b982469a6926922f2f6e96754a0c66affb0847b9a44d505c053cbd788b97e998efb8d1e558ea00ae4a0b7f15bed9b0