diff --git a/Cargo.toml b/Cargo.toml
index 87f418e..e1a3e42 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "syn"
-version = "0.15.30" # don't forget to update html_root_url and syn.json
+version = "0.15.31" # don't forget to update html_root_url and syn.json
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 license = "MIT/Apache-2.0"
 description = "Parser for Rust source code"
diff --git a/src/lib.rs b/src/lib.rs
index 24f682e..e41e428 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -222,7 +222,7 @@
 //!   dynamic library libproc_macro from rustc toolchain.
 
 // Syn types in rustdoc of other crates get linked to here.
-#![doc(html_root_url = "https://docs.rs/syn/0.15.30")]
+#![doc(html_root_url = "https://docs.rs/syn/0.15.31")]
 #![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
 // Ignored clippy lints.
diff --git a/syn.json b/syn.json
index 8da505e..8a023e5 100644
--- a/syn.json
+++ b/syn.json
@@ -1,5 +1,5 @@
 {
-  "version": "0.15.30",
+  "version": "0.15.31",
   "types": [
     {
       "ident": "Abi",