diff --git a/Cargo.lock b/Cargo.lock
index 76e46d0..03681fc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1367,6 +1367,7 @@ dependencies = [
  "rustls",
  "rustls-native-certs",
  "rustls-pki-types",
+ "rustls-platform-verifier",
  "tokio",
  "tokio-rustls",
  "tower-service",
@@ -1589,24 +1590,28 @@ dependencies = [
 
 [[package]]
 name = "instant-acme"
-version = "0.7.2"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37221e690dcc5d0ea7c1f70decda6ae3495e72e8af06bca15e982193ffdf4fc4"
+checksum = "9f05ad37c421b962354c358d347d4a6130151df9407978372d3ad7f0c8f71a64"
 dependencies = [
  "async-trait",
+ "aws-lc-rs",
  "base64",
  "bytes",
  "http",
  "http-body",
  "http-body-util",
+ "httpdate",
  "hyper",
  "hyper-rustls",
  "hyper-util",
- "ring",
+ "rcgen",
+ "rustls",
  "rustls-pki-types",
  "serde",
  "serde_json",
- "thiserror 1.0.69",
+ "thiserror 2.0.18",
+ "tokio",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 8883216..a30c47d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -154,7 +154,7 @@ x509-parser = "0.16"
 reqwest = { version = "0.12", default-features = false, features = ["rustls-tls", "json"] }
 
 # ACME client (RFC 8555) - works with any ACME CA
-instant-acme = { version = "0.7", optional = true }
+instant-acme = { version = "0.8", optional = true }
 
 # CLI argument parsing
 clap = { version = "4.5", features = ["derive", "env"] }