diff --git a/.github/workflows/crypto.yml b/.github/workflows/crypto.yml
index 08d023362..1dc9fe953 100644
--- a/.github/workflows/crypto.yml
+++ b/.github/workflows/crypto.yml
@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -54,7 +54,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v7
diff --git a/.github/workflows/digest.yml b/.github/workflows/digest.yml
index 3a6fee37f..13f8412b9 100644
--- a/.github/workflows/digest.yml
+++ b/.github/workflows/digest.yml
@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -52,7 +52,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v7
diff --git a/.github/workflows/elliptic-curve.yml b/.github/workflows/elliptic-curve.yml
index a14c1afdd..fc4adab3a 100644
--- a/.github/workflows/elliptic-curve.yml
+++ b/.github/workflows/elliptic-curve.yml
@@ -31,7 +31,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -72,7 +72,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
           - nightly
     steps:
diff --git a/.github/workflows/password-hash.yml b/.github/workflows/password-hash.yml
index 6f16e4191..618b33e6d 100644
--- a/.github/workflows/password-hash.yml
+++ b/.github/workflows/password-hash.yml
@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -53,7 +53,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v7
diff --git a/.github/workflows/signature.yml b/.github/workflows/signature.yml
index e23f381e0..8ce18bbba 100644
--- a/.github/workflows/signature.yml
+++ b/.github/workflows/signature.yml
@@ -29,7 +29,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -54,7 +54,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # Minimum Rust version the tests pass on
+          - 1.87.0 # Minimum Rust version the tests pass on
           - stable
     steps:
       - uses: actions/checkout@v7
diff --git a/.github/workflows/universal-hash.yml b/.github/workflows/universal-hash.yml
index 51ccb539a..5726b336a 100644
--- a/.github/workflows/universal-hash.yml
+++ b/.github/workflows/universal-hash.yml
@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
         target:
           - thumbv7em-none-eabi
@@ -52,7 +52,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.85.0 # MSRV
+          - 1.87.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v7
diff --git a/Cargo.lock b/Cargo.lock
index 6599ec519..8d1947f77 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -129,9 +129,9 @@ dependencies = [
 
 [[package]]
 name = "crypto-bigint"
-version = "0.7.5"
+version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a52aa3fcda4e6302a9f48734f234d35d4721b96f8fe07d073f07ce9df4f0271"
+checksum = "6bb08299a6046833a879ace115697f12fd2bd6c8d3e93c909ffc9e0738e7cae0"
 dependencies = [
  "cpubits",
  "ctutils",
@@ -154,9 +154,9 @@ dependencies = [
 
 [[package]]
 name = "ctutils"
-version = "0.4.2"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d5515a3834141de9eafb9717ad39eea8247b5674e6066c404e8c4b365d2a29e"
+checksum = "38d28fb6aa7dd680b3ffd1a3e64e115c177bdba63c0ae7f9cd48129ff05c4fa0"
 dependencies = [
  "cmov",
  "subtle",
diff --git a/crypto/Cargo.toml b/crypto/Cargo.toml
index 288d63c68..c153561d1 100644
--- a/crypto/Cargo.toml
+++ b/crypto/Cargo.toml
@@ -3,7 +3,7 @@ name = "crypto"
 version = "0.6.0-pre"
 authors = ["The RustCrypto Project Developers"]
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.87"
 documentation = "https://docs.rs/crypto"
 readme = "README.md"
 repository = "https://github.com/RustCrypto/traits"
diff --git a/crypto/README.md b/crypto/README.md
index 8f23eeca0..00d0af5f0 100644
--- a/crypto/README.md
+++ b/crypto/README.md
@@ -77,7 +77,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/crypto/badge.svg
 [docs-link]: https://docs.rs/crypto/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.85+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.87+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260050-Traits
 [build-image]: https://github.com/RustCrypto/traits/actions/workflows/crypto.yml/badge.svg?branch=master
diff --git a/digest/Cargo.toml b/digest/Cargo.toml
index a696a82e8..b179f955a 100644
--- a/digest/Cargo.toml
+++ b/digest/Cargo.toml
@@ -3,7 +3,7 @@ name = "digest"
 version = "0.11.3"
 authors = ["RustCrypto Developers"]
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.87"
 documentation = "https://docs.rs/digest"
 readme = "README.md"
 repository = "https://github.com/RustCrypto/traits"
@@ -19,7 +19,7 @@ common = { version = "0.2", package = "crypto-common" }
 block-buffer = { version = "0.12", optional = true }
 blobby = { version = "0.4", optional = true }
 const-oid = { version = "0.10", optional = true }
-ctutils = { version = "0.4", optional = true }
+ctutils = { version = "0.4.5", optional = true }
 zeroize = { version = "1.7", optional = true, default-features = false }
 
 [dev-dependencies]
diff --git a/digest/README.md b/digest/README.md
index e33346976..1ea454c58 100644
--- a/digest/README.md
+++ b/digest/README.md
@@ -118,7 +118,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/digest/badge.svg
 [docs-link]: https://docs.rs/digest/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.85+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.87+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
 [build-image]: https://github.com/RustCrypto/traits/actions/workflows/digest.yml/badge.svg?branch=master
diff --git a/elliptic-curve/Cargo.toml b/elliptic-curve/Cargo.toml
index 6c78670f0..c5fa3fbd2 100644
--- a/elliptic-curve/Cargo.toml
+++ b/elliptic-curve/Cargo.toml
@@ -3,7 +3,7 @@ name = "elliptic-curve"
 version = "0.14.1"
 authors = ["RustCrypto Developers"]
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.87"
 documentation = "https://docs.rs/elliptic-curve"
 readme = "README.md"
 repository = "https://github.com/RustCrypto/traits"
@@ -17,7 +17,7 @@ representing various elliptic curve forms, scalars, points, and public/secret ke
 
 [dependencies]
 array = { package = "hybrid-array", version = "0.4.13", default-features = false, features = ["zeroize"] }
-bigint = { package = "crypto-bigint", version = "0.7.5", default-features = false, features = ["hybrid-array", "rand_core", "subtle", "zeroize"] }
+bigint = { package = "crypto-bigint", version = "0.7.6", default-features = false, features = ["hybrid-array", "rand_core", "subtle", "zeroize"] }
 base16ct = "1"
 common = { package = "crypto-common", version = "0.2", features = ["rand_core"] }
 rand_core = { version = "0.10", default-features = false }
diff --git a/elliptic-curve/README.md b/elliptic-curve/README.md
index 3148a8c1b..34800e756 100644
--- a/elliptic-curve/README.md
+++ b/elliptic-curve/README.md
@@ -35,6 +35,6 @@ dual licensed as above, without any additional terms or conditions.
 [build-image]: https://github.com/RustCrypto/traits/actions/workflows/elliptic-curve.yml/badge.svg?branch=master
 [build-link]: https://github.com/RustCrypto/traits/actions/workflows/elliptic-curve.yml?query=branch:master
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.85+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.87+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260040-elliptic-curves
diff --git a/password-hash/Cargo.toml b/password-hash/Cargo.toml
index d51c8166f..6d8983b8f 100644
--- a/password-hash/Cargo.toml
+++ b/password-hash/Cargo.toml
@@ -3,7 +3,7 @@ name = "password-hash"
 version = "0.6.1"
 authors = ["RustCrypto Developers"]
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.87"
 documentation = "https://docs.rs/password-hash"
 readme = "README.md"
 repository = "https://github.com/RustCrypto/traits"
diff --git a/password-hash/README.md b/password-hash/README.md
index d7824ae99..cd49a930b 100644
--- a/password-hash/README.md
+++ b/password-hash/README.md
@@ -56,7 +56,7 @@ dual licensed as above, without any additional terms or conditions.
 [build-image]: https://github.com/RustCrypto/traits/actions/workflows/password-hash.yml/badge.svg?branch=master
 [build-link]: https://github.com/RustCrypto/traits/actions/workflows/password-hash.yml?query=branch:master
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.85+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.87+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260046-password-hashes
 
diff --git a/signature/Cargo.toml b/signature/Cargo.toml
index f61b5d83e..80f06a8d4 100644
--- a/signature/Cargo.toml
+++ b/signature/Cargo.toml
@@ -3,7 +3,7 @@ name = "signature"
 version = "3.0.0"
 authors = ["RustCrypto Developers"]
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.87"
 documentation = "https://docs.rs/signature"
 readme = "README.md"
 repository = "https://github.com/RustCrypto/traits"
diff --git a/signature/README.md b/signature/README.md
index 535dfe438..42d830c72 100644
--- a/signature/README.md
+++ b/signature/README.md
@@ -63,7 +63,7 @@ dual licensed as above, without any additional terms or conditions.
 [build-image]: https://github.com/RustCrypto/traits/actions/workflows/signature.yml/badge.svg?branch=master
 [build-link]: https://github.com/RustCrypto/traits/actions/workflows/signature.yml?query=branch:master
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.85+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.87+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260048-signatures
 
diff --git a/universal-hash/Cargo.toml b/universal-hash/Cargo.toml
index 87097f64d..4bbbdebec 100644
--- a/universal-hash/Cargo.toml
+++ b/universal-hash/Cargo.toml
@@ -3,7 +3,7 @@ name = "universal-hash"
 version = "0.6.1"
 authors = ["RustCrypto Developers"]
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.87"
 documentation = "https://docs.rs/universal-hash"
 readme = "README.md"
 repository = "https://github.com/RustCrypto/traits"
@@ -13,7 +13,7 @@ categories = ["cryptography", "no-std"]
 description = "Traits which describe the functionality of universal hash functions (UHFs)"
 
 [dependencies]
-ctutils = "0.4"
+ctutils = "0.4.5"
 common = { version = "0.2", package = "crypto-common" }
 
 [lints]
diff --git a/universal-hash/README.md b/universal-hash/README.md
index 7ca8a6927..ed0ce7cdd 100644
--- a/universal-hash/README.md
+++ b/universal-hash/README.md
@@ -33,7 +33,7 @@ dual licensed as above, without any additional terms or conditions.
 [docs-image]: https://docs.rs/universal-hash/badge.svg
 [docs-link]: https://docs.rs/universal-hash/
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.85+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.87+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260051-universal-hashes
 [build-image]: https://github.com/RustCrypto/traits/actions/workflows/universal-hash.yml/badge.svg?branch=master