diff --git a/Cargo.lock b/Cargo.lock
index ebcb761..e5065c0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -54,11 +54,11 @@ checksum = "3ded4057c258ba199e2d26386d3af3780957ecaee6c4ef4041c6b4b8b97c0b06"
 
 [[package]]
 name = "block-buffer"
-version = "0.10.4"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+checksum = "d2f6c7dbe95a6ed67ad9f18e57daf93a2f034c524b99fd2b76d18fdfeb6660aa"
 dependencies = [
- "generic-array",
+ "hybrid-array",
 ]
 
 [[package]]
@@ -108,7 +108,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "65c35e4b699c7e15ccbe7ee35c005e4fc0a278d22238a2857e6ce2dadeda1b06"
 dependencies = [
  "cfg-if",
- "cpufeatures 0.3.1",
+ "cpufeatures",
  "rand_core 0.10.1",
 ]
 
@@ -125,19 +125,16 @@ dependencies = [
 ]
 
 [[package]]
-name = "core-foundation-sys"
-version = "0.8.7"
+name = "const-oid"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
+checksum = "a6ef517f0926dd24a1582492c791b6a4818a4d94e789a334894aa15b0d12f55c"
 
 [[package]]
-name = "cpufeatures"
-version = "0.2.17"
+name = "core-foundation-sys"
+version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
-dependencies = [
- "libc",
-]
+checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "cpufeatures"
@@ -159,12 +156,11 @@ dependencies = [
 
 [[package]]
 name = "crypto-common"
-version = "0.1.7"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
+checksum = "ce6e4c961d6cd6c9a86db418387425e8bdeaf05b3c8bc1411e6dca4c252f1453"
 dependencies = [
- "generic-array",
- "typenum",
+ "hybrid-array",
 ]
 
 [[package]]
@@ -203,11 +199,12 @@ dependencies = [
 
 [[package]]
 name = "digest"
-version = "0.10.7"
+version = "0.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+checksum = "f1dd6dbb5841937940781866fa1281a1ff7bd3bf827091440879f9994983d5c2"
 dependencies = [
  "block-buffer",
+ "const-oid",
  "crypto-common",
 ]
 
@@ -414,16 +411,6 @@ dependencies = [
  "byteorder",
 ]
 
-[[package]]
-name = "generic-array"
-version = "0.14.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
-dependencies = [
- "typenum",
- "version_check",
-]
-
 [[package]]
 name = "getopts"
 version = "0.2.24"
@@ -523,6 +510,15 @@ version = "1.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6dbf3de79e51f3d586ab4cb9d5c3e2c14aa28ed23d180cf89b4df0454a69cc87"
 
+[[package]]
+name = "hybrid-array"
+version = "0.4.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "27f864f10dfb56725ce5ce5472bc52252c8f93a4ab86327122cebf62c5f59a17"
+dependencies = [
+ "typenum",
+]
+
 [[package]]
 name = "hyper"
 version = "1.11.1"
@@ -594,7 +590,7 @@ dependencies = [
  "js-sys",
  "log",
  "wasm-bindgen",
- "windows-core 0.58.0",
+ "windows-core",
 ]
 
 [[package]]
@@ -1441,12 +1437,12 @@ dependencies = [
 
 [[package]]
 name = "sha2"
-version = "0.10.9"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
+checksum = "47d7069beb7d6ac7b9acd1039986e73443f24234f41074da099d6f994ac9ad19"
 dependencies = [
  "cfg-if",
- "cpufeatures 0.2.17",
+ "cpufeatures",
  "digest",
 ]
 
@@ -1992,12 +1988,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "version_check"
-version = "0.9.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
-
 [[package]]
 name = "want"
 version = "0.3.1"
@@ -2104,7 +2094,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "527fadee13e0c05939a6a05d5bd6eec6cd2e3dbd648b9f8e447c6518133d8580"
 dependencies = [
  "windows-collections",
- "windows-core 0.62.2",
+ "windows-core",
  "windows-future",
  "windows-numerics",
 ]
@@ -2115,20 +2105,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "23b2d95af1a8a14a3c7367e1ed4fc9c20e0a26e79551b1454d72583c97cc6610"
 dependencies = [
- "windows-core 0.62.2",
-]
-
-[[package]]
-name = "windows-core"
-version = "0.58.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ba6d44ec8c2591c134257ce647b7ea6b20335bf6379a27dac5f1641fcf59f99"
-dependencies = [
- "windows-implement 0.58.0",
- "windows-interface 0.58.0",
- "windows-result 0.2.0",
- "windows-strings 0.1.0",
- "windows-targets",
+ "windows-core",
 ]
 
 [[package]]
@@ -2137,11 +2114,11 @@ version = "0.62.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8e83a14d34d0623b51dce9581199302a221863196a1dde71a7663a4c2be9deb"
 dependencies = [
- "windows-implement 0.60.2",
- "windows-interface 0.59.3",
+ "windows-implement",
+ "windows-interface",
  "windows-link",
- "windows-result 0.4.1",
- "windows-strings 0.5.1",
+ "windows-result",
+ "windows-strings",
 ]
 
 [[package]]
@@ -2150,22 +2127,11 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e1d6f90251fe18a279739e78025bd6ddc52a7e22f921070ccdc67dde84c605cb"
 dependencies = [
- "windows-core 0.62.2",
+ "windows-core",
  "windows-link",
  "windows-threading",
 ]
 
-[[package]]
-name = "windows-implement"
-version = "0.58.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2bbd5b46c938e506ecbce286b6628a02171d56153ba733b6c741fc627ec9579b"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.119",
-]
-
 [[package]]
 name = "windows-implement"
 version = "0.60.2"
@@ -2177,17 +2143,6 @@ dependencies = [
  "syn 2.0.119",
 ]
 
-[[package]]
-name = "windows-interface"
-version = "0.58.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "053c4c462dc91d3b1504c6fe5a726dd15e216ba718e84a0e46a88fbe5ded3515"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.119",
-]
-
 [[package]]
 name = "windows-interface"
 version = "0.59.3"
@@ -2211,19 +2166,10 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e2e40844ac143cdb44aead537bbf727de9b044e107a0f1220392177d15b0f26"
 dependencies = [
- "windows-core 0.62.2",
+ "windows-core",
  "windows-link",
 ]
 
-[[package]]
-name = "windows-result"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d1043d8214f791817bab27572aaa8af63732e11bf84aa21a45a78d6c317ae0e"
-dependencies = [
- "windows-targets",
-]
-
 [[package]]
 name = "windows-result"
 version = "0.4.1"
@@ -2233,16 +2179,6 @@ dependencies = [
  "windows-link",
 ]
 
-[[package]]
-name = "windows-strings"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10"
-dependencies = [
- "windows-result 0.2.0",
- "windows-targets",
-]
-
 [[package]]
 name = "windows-strings"
 version = "0.5.1"
diff --git a/Cargo.toml b/Cargo.toml
index 3ec3c4e..5263a5f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -65,7 +65,7 @@ tokio = "1"
 # system OpenSSL dependency.
 reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }
 # File digests: the `if_sha256` write guard and the Lean provenance digest.
-sha2 = "0.10"
+sha2 = "0.11"
 # Hex-encodes those digests for the wire.
 hex = "0.4"
 # Scratch project workspaces in tests of the file, Lean, and Python crates.