diff --git a/src/post/cache.rs b/src/post/cache.rs
index 36ffcab..d4ee5b7 100644
--- a/src/post/cache.rs
+++ b/src/post/cache.rs
@@ -33,6 +33,7 @@ pub struct CacheValue {
 pub struct Cache {
     map: HashMap<CacheKey, CacheValue>,
     version: u16,
+    #[serde(skip)]
     ttl: Option<NonZeroU64>,
 }
 
@@ -278,5 +279,10 @@ pub(crate) async fn load_cache(config: &CacheConfig) -> Result<Cache, eyre::Repo
         buf
     };
 
-    bitcode::deserialize(serialized.as_slice()).context("failed to parse cache")
+    let mut cache: Cache =
+        bitcode::deserialize(serialized.as_slice()).context("failed to parse cache")?;
+
+    cache.ttl = config.ttl;
+
+    Ok(cache)
 }
diff --git a/static/date.js b/static/date.js
index c9818fc..2a969e5 100644
--- a/static/date.js
+++ b/static/date.js
@@ -1,7 +1,8 @@
 function replaceDates() {
 	for (let el of document.querySelectorAll(".date-rfc3339")) {
 		let date = new Date(Date.parse(el.textContent));
+		el.title = el.textContent;
 		el.textContent = date.toLocaleString();
-		el.classList.remove("date-rfc3339");
+		el.classList.replace("date-rfc3339", "tooltipped");
 	}
 }