diff --git a/.env.sample b/.env.sample
index 0f8813a..591c9a2 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1,6 +1,5 @@
 # Required for authenticated version checks
 PAPERLESS_API_TOKEN=replace-with-api-token
-RADICALE_BASIC_AUTH=base64-user-colon-pass
 
 # Optional (use if upstream APIs need auth to avoid rate limits)
 GITHUB_TOKEN=optional-github-token
diff --git a/README.md b/README.md
index a283140..8f4938f 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,6 @@ Copy `.env.sample` to `.env` and fill required values. Export the variables befo
 
 ```bash
 export PAPERLESS_API_TOKEN=...
-export RADICALE_BASIC_AUTH=...
 export FRESHRSS_USERNAME=...
 export FRESHRSS_PASSWORD=...
 ```
diff --git a/check_updates.py b/check_updates.py
index a434d5d..e4ad30a 100644
--- a/check_updates.py
+++ b/check_updates.py
@@ -124,16 +124,16 @@ def load_services(config: Dict[str, Any]) -> Dict[str, ServiceConfig]:
 
 
 def resolve_env_placeholders(value: str) -> str:
-    pattern = re.compile(r"\{env:([A-Z0-9_]+)\}")
+    env_pattern = re.compile(r"\{env:([A-Z0-9_]+)\}")
 
-    def replace(match: re.Match[str]) -> str:
+    def replace_env(match: re.Match[str]) -> str:
         env_name = match.group(1)
         env_value = os.getenv(env_name)
         if env_value is None:
             raise ValueError(f"Missing environment variable {env_name}")
         return env_value
 
-    return pattern.sub(replace, value)
+    return env_pattern.sub(replace_env, value)
 
 
 def build_headers(raw_headers: Optional[Dict[str, str]]) -> Dict[str, str]:
diff --git a/services.yaml b/services.yaml
index 3bb91b2..acc1230 100644
--- a/services.yaml
+++ b/services.yaml
@@ -83,19 +83,6 @@ services:
     upstream_latest_extract:
       type: jsonpath
       value: $.tag_name
-  - name: Radicale WebDav
-    base_url: https://dav.jeena.net/.web/
-    current_version_url: https://dav.jeena.net/version
-    current_version_extract:
-      type: jsonpath
-      value: $.version
-    current_version_headers:
-      Authorization: Basic {env:RADICALE_BASIC_AUTH}
-    upstream_latest_version_url: https://api.github.com/repos/Kozea/Radicale/releases/latest
-    upstream_latest_extract:
-      type: jsonpath
-      value: $.tag_name
-    notes: /version returns 401 without auth; uses Basic auth.
   - name: FreshRSS
     base_url: https://rss.jeena.net/
     current_version_url: https://rss.jeena.net/i/?a=about