diff --git a/Cargo.lock b/Cargo.lock
index ee939cfc..bfad3687 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -88,9 +88,9 @@ dependencies = [
 
 [[package]]
 name = "ctr"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a232f92a03f37dd7d7dd2adc67166c77e9cd88de5b019b9a9eecfaeaf7bfd481"
+checksum = "049bb91fb4aaf0e3c7efa6cd5ef877dbbbd15b39dad06d9948de4ec8a75761ea"
 dependencies = [
  "cipher",
 ]
diff --git a/aes/CHANGELOG.md b/aes/CHANGELOG.md
index d068a720..80536929 100644
--- a/aes/CHANGELOG.md
+++ b/aes/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Changed
+- Bump `ctr` dependency to v0.8 ([#275])
+
+[#275]: https://github.com/RustCrypto/block-ciphers/pull/275
+
 ## 0.7.4 (2021-06-01)
 ### Added
 - Soft `hazmat` backend ([#267], [#268])
diff --git a/aes/Cargo.toml b/aes/Cargo.toml
index 0bbd6c29..7de77ca1 100644
--- a/aes/Cargo.toml
+++ b/aes/Cargo.toml
@@ -17,7 +17,7 @@ categories = ["cryptography", "no-std"]
 [dependencies]
 cfg-if = "1"
 cipher = "0.3"
-ctr = { version = "0.7", optional = true }
+ctr = { version = "0.8", optional = true }
 opaque-debug = "0.3"
 
 [dev-dependencies]