diff --git a/proxmox-acme-api/Cargo.toml b/proxmox-acme-api/Cargo.toml
index 13ace495..d00d8ab7 100644
--- a/proxmox-acme-api/Cargo.toml
+++ b/proxmox-acme-api/Cargo.toml
@@ -7,6 +7,7 @@ license.workspace = true
 repository.workspace = true
 exclude.workspace = true
 description = "ACME API implementation"
+rust-version.workspace = true
 
 [dependencies]
 anyhow.workspace = true
@@ -15,7 +16,6 @@ futures = { workspace = true, optional = true }
 hex = { workspace = true, optional = true }
 http = { workspace = true, optional = true }
 hyper = { workspace = true, optional = true }
-lazy_static = { workspace = true, optional = true }
 log = { workspace = true, optional = true }
 nix = { workspace = true, optional = true }
 serde = { workspace = true, features = ["derive"] }
@@ -48,7 +48,6 @@ impl = [
     "dep:hex",
     "dep:http",
     "dep:hyper",
-    "dep:lazy_static",
     "dep:libc",
     "dep:log",
     "dep:nix",
diff --git a/proxmox-acme-api/src/challenge_schemas.rs b/proxmox-acme-api/src/challenge_schemas.rs
index 6e1217c8..40a6a6af 100644
--- a/proxmox-acme-api/src/challenge_schemas.rs
+++ b/proxmox-acme-api/src/challenge_schemas.rs
@@ -2,12 +2,10 @@
 //!
 //! Those schemas are provided by debian  package "libproxmox-acme-plugins".
 
-use std::sync::Arc;
-use std::sync::Mutex;
+use std::sync::{Arc, LazyLock, Mutex};
 use std::time::SystemTime;
 
 use anyhow::Error;
-use lazy_static::lazy_static;
 use serde::Serialize;
 use serde_json::Value;
 
@@ -51,10 +49,8 @@ fn load_dns_challenge_schema() -> Result<Vec<AcmeChallengeSchema>, Error> {
 }
 
 pub fn get_cached_challenge_schemas() -> Result<ChallengeSchemaWrapper, Error> {
-    lazy_static! {
-        static ref CACHE: Mutex<Option<(Arc<Vec<AcmeChallengeSchema>>, SystemTime)>> =
-            Mutex::new(None);
-    }
+    static CACHE: LazyLock<Mutex<Option<(Arc<Vec<AcmeChallengeSchema>>, SystemTime)>>> =
+        LazyLock::new(|| Mutex::new(None));
 
     // the actual loading code
     let mut last = CACHE.lock().unwrap();
diff --git a/proxmox-acme-api/src/plugin_config.rs b/proxmox-acme-api/src/plugin_config.rs
index d75bea59..b7ed7594 100644
--- a/proxmox-acme-api/src/plugin_config.rs
+++ b/proxmox-acme-api/src/plugin_config.rs
@@ -1,7 +1,8 @@
 //! ACME plugin configuration helpers (SectionConfig implementation)
 
+use std::sync::LazyLock;
+
 use anyhow::Error;
-use lazy_static::lazy_static;
 use serde_json::Value;
 
 use proxmox_config_digest::ConfigDigest;
@@ -11,9 +12,7 @@ use proxmox_section_config::{SectionConfig, SectionConfigData, SectionConfigPlug
 
 use crate::types::{DnsPlugin, StandalonePlugin, PLUGIN_ID_SCHEMA};
 
-lazy_static! {
-    static ref CONFIG: SectionConfig = init();
-}
+static CONFIG: LazyLock<SectionConfig> = LazyLock::new(init);
 
 impl DnsPlugin {
     pub fn decode_data(&self, output: &mut Vec<u8>) -> Result<(), Error> {