diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b5be8aeb..30da13c3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,8 +13,8 @@ jobs:
   all:
     strategy:
       matrix:
-        # 1.87 is an arbitrary minimum, tested to notice when it bumps
-        rust_version: [stable, nightly, 1.87]
+        # 1.88 is an arbitrary minimum, tested to notice when it bumps
+        rust_version: [stable, nightly, 1.88]
     runs-on: ubuntu-latest
     env:
       RUSTUP_TOOLCHAIN: ${{ matrix.rust_version }}
diff --git a/Cargo.lock b/Cargo.lock
index b347b125..d1ab0aad 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -146,7 +146,7 @@ dependencies = [
  "argh_shared",
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -360,9 +360,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes"
-version = "1.5.0"
+version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2bd12c1caf447e69cd4528f47f94d203fd2582878ecb9e9465484c4148a8223"
+checksum = "1e748733b7cbc798e1434b6ac524f0c1ff2ab456fe201501e6497c8417a4fc33"
 
 [[package]]
 name = "caprand"
@@ -564,7 +564,7 @@ checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -618,7 +618,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -629,7 +629,7 @@ checksum = "836a9bbc7ad63342d6d6e7b815ccab164bc77a2d95d84bc3117a8c0d5c98e2d5"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -650,9 +650,9 @@ dependencies = [
 
 [[package]]
 name = "deranged"
-version = "0.3.11"
+version = "0.5.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b42b6fa04a440b495c8b04d0e71b707c585f83cb9cb28cf8cd0d976c315e31b4"
+checksum = "7cd812cc2bc1d69d4764bd80df88b4317eaef9e773c75226407d9bc0876b211c"
 dependencies = [
  "powerfmt",
 ]
@@ -665,7 +665,7 @@ checksum = "30542c1ad912e0e3d22a1935c290e12e8a29d704a420177a31faad4a601a0800"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -790,7 +790,7 @@ dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -1280,7 +1280,7 @@ checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -1481,9 +1481,9 @@ dependencies = [
 
 [[package]]
 name = "instant"
-version = "0.1.12"
+version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+checksum = "e0242819d153cba4b4b05a5a8f2a7e9bbf97b6055b2a002b395c96b5ff3c0222"
 dependencies = [
  "cfg-if",
 ]
@@ -1532,9 +1532,9 @@ dependencies = [
 
 [[package]]
 name = "keccak"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ecc2af9a1119c51f12a14607e783cb977bde58bc069ff0c3da1095e635d70654"
+checksum = "cb26cec98cce3a3d96cbb7bced3c4b16e3d13f27ec56dbd62cbc8f39cfb9d653"
 dependencies = [
  "cpufeatures",
 ]
@@ -1746,9 +1746,9 @@ dependencies = [
 
 [[package]]
 name = "num-conv"
-version = "0.1.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
+checksum = "c6673768db2d862beb9b39a78fdcb1a69439615d5794a1be50caa9bc92c81967"
 
 [[package]]
 name = "num-integer"
@@ -1818,7 +1818,7 @@ checksum = "af1844ef2428cc3e1cb900be36181049ef3d3193c63e43026cfe202983b27a56"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -1924,9 +1924,9 @@ dependencies = [
 
 [[package]]
 name = "paste"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
+checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
 [[package]]
 name = "pem-rfc7468"
@@ -2019,7 +2019,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -2131,14 +2131,14 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.76"
+version = "1.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95fc56cda0b5c3325f5fbbd7ff9fda9e02bb00bb3dac51252d2f1bfa1cb8cc8c"
+checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
 dependencies = [
  "unicode-ident",
 ]
@@ -2423,22 +2423,32 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "serde"
-version = "1.0.195"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "63261df402c67811e9ac6def069e4786148c4563f4b50fd4bf30aa370d626b02"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.195"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46fe8f8603d81ba86327b23a2e9cdf49e1255fb94a4c5f297f6ee0547178ea2c"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -2569,7 +2579,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -2899,9 +2909,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.58"
+version = "2.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44cfb93f38070beee36b3fef7d4f5a16f27751d94b187b666a5cc5e9b0d30687"
+checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2929,9 +2939,9 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.3.36"
+version = "0.3.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
+checksum = "743bd48c283afc0388f9b8827b976905fb217ad9e647fae3a379a9283c4def2c"
 dependencies = [
  "deranged",
  "itoa",
@@ -2939,22 +2949,22 @@ dependencies = [
  "num-conv",
  "num_threads",
  "powerfmt",
- "serde",
+ "serde_core",
  "time-core",
  "time-macros",
 ]
 
 [[package]]
 name = "time-core"
-version = "0.1.2"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
+checksum = "7694e1cfe791f8d31026952abf09c69ca6f6fa4e1a1229e18988f06a04a12dca"
 
 [[package]]
 name = "time-macros"
-version = "0.2.18"
+version = "0.2.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f252a68540fde3a3877aeea552b832b40ab9a69e318efd078774a01ddee1ccf"
+checksum = "2e70e4c5a0e0a8a4823ad65dfe1a6930e4f4d756dcd9dd7939022b5e8c501215"
 dependencies = [
  "num-conv",
  "time-core",
@@ -2985,7 +2995,7 @@ checksum = "af407857209536a95c8e56f8231ef2c2e2aff839b22e07a1ffcbc617e9db9fa5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -3163,7 +3173,7 @@ dependencies = [
  "log",
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
  "wasm-bindgen-shared",
 ]
 
@@ -3185,7 +3195,7 @@ checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -3522,7 +3532,7 @@ checksum = "28a6e20d751156648aa063f3800b706ee209a32c0b4d9f24be3d980b01be55ef"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -3542,5 +3552,5 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.58",
+ "syn 2.0.117",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 61ffdc26..f3cf194b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ repository = "https://github.com/mkj/sunset"
 categories = ["network-programming", "embedded", "no-std"]
 license = "0BSD"
 keywords = ["ssh"]
-rust-version = "1.87"
+rust-version = "1.88"
 
 [workspace]
 members = [
diff --git a/README.md b/README.md
index 9549ac76..2b8fd274 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ Desirable:
 
 ## Rust versions
 
-At the time of writing Sunset will build with Rust 1.87.
+At the time of writing Sunset will build with Rust 1.88.
 The requirement may increase whenever useful, targetting stable.
 
 ## Checks