diff --git a/slog-error-chain-derive/Cargo.lock b/slog-error-chain-derive/Cargo.lock
index cb44496..9bf66c7 100644
--- a/slog-error-chain-derive/Cargo.lock
+++ b/slog-error-chain-derive/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.70"
+version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
+checksum = "f139b0662de085916d1fb67d2b4169d1addddda1919e696f3252b740b629986e"
 dependencies = [
  "unicode-ident",
 ]