diff --git a/impl/Cargo.lock b/impl/Cargo.lock
index 0c963206..7db3432f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1957,9 +1957,9 @@ dependencies = [
 
 [[package]]
 name = "rustc-serialize"
-version = "0.3.24"
+version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
+checksum = "fe834bc780604f4674073badbad26d7219cadfb4a2275802db12cbae17498401"
 
 [[package]]
 name = "ryu"
diff --git a/impl/Cargo.toml b/impl/Cargo.toml
index 9dd6dd99..a559febf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ itertools = "0.10.0"
 log = "0.4.13"
 pathdiff = "0.2.0"
 regex = "1.5.5"
-rustc-serialize = "0.3.24"
+rustc-serialize = "0.3.25"
 semver = { version = "1", features = ["serde"] }
 serde = "1.0.120"
 serde_derive = "1.0.120"