diff --git a/crates/ipx/CHANGELOG.md b/crates/ipx/CHANGELOG.md
index ec30543..3bbef01 100644
--- a/crates/ipx/CHANGELOG.md
+++ b/crates/ipx/CHANGELOG.md
@@ -34,6 +34,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - A check of one feed asks at most eight hosts whether its artwork is on https. A feed could name artwork on as many hosts as it liked, each asked in turn for up to 20 seconds, and hold up every other feed's check for hours (#339).
 - An OPML or Patreon list may bring in up to 2,000 feeds; one with more shows an error and adds none. A list of tens of thousands held up checking for everyone, and adding its feeds read the whole feeds table once for each (#337).
 - A request that changes something is refused when a browser sent it from another site. A page on another site, a sibling subdomain included, could mark everything read, start downloads, subscribe you to a Directory feed or sign you out (#336).
+- `ipx user passwd` signs the account out of every browser, and says how many of its API tokens still work. A session signed in with the old password went on working (#334).
 
 ## [1.4.0] - 2026-10-19
 
diff --git a/crates/ipx/src/db.rs b/crates/ipx/src/db.rs
index d95caac..b441a73 100644
--- a/crates/ipx/src/db.rs
+++ b/crates/ipx/src/db.rs
@@ -2059,8 +2059,14 @@ impl Db {
         Ok(())
     }
 
+    /// Signs the account out everywhere, too: a password is changed because someone else may
+    /// know it, and a session they signed in with stayed good, every use putting off its expiry
+    /// (#334). API tokens stay; they are listed and removed in Settings.
     pub async fn set_password(&self, id: i64, hash: &str) -> Result<()> {
-        self.update_user(id, users::ActiveModel { pass_hash: Set(Some(hash.to_owned())), ..Default::default() }).await
+        self.update_user(id, users::ActiveModel { pass_hash: Set(Some(hash.to_owned())), ..Default::default() })
+            .await?;
+        sessions::Entity::delete_many().filter(sessions::Column::UserId.eq(id)).exec(&self.orm).await?;
+        Ok(())
     }
 
     pub async fn set_admin(&self, id: i64, admin: bool) -> Result<()> {
@@ -3003,6 +3009,22 @@ pub fn now() -> i64 {
 mod tests {
     use super::*;
 
+    #[tokio::test]
+    async fn a_new_password_signs_the_account_out_everywhere_but_keeps_its_tokens() {
+        let db = Db::memory().await.unwrap();
+        let (me, you) =
+            (db.create_user("me", None, false).await.unwrap(), db.create_user("you", None, false).await.unwrap());
+        db.create_session(me, "mine").await.unwrap();
+        db.create_session(you, "yours").await.unwrap();
+        db.create_api_token(me, "script", "hash").await.unwrap();
+
+        db.set_password(me, "new-hash").await.unwrap();
+
+        assert!(db.session_user("mine", 3600).await.unwrap().is_none(), "a stolen cookie stops working (#334)");
+        assert!(db.session_user("yours", 3600).await.unwrap().is_some(), "nobody else is signed out");
+        assert!(db.api_token_user("hash").await.unwrap().is_some());
+    }
+
     #[tokio::test]
     async fn deadair_looks_at_a_file_once_per_download_and_counts_an_episode_once() {
         let db = Db::memory().await.unwrap();
diff --git a/crates/ipx/src/main.rs b/crates/ipx/src/main.rs
index f15f962..e0ce05d 100644
--- a/crates/ipx/src/main.rs
+++ b/crates/ipx/src/main.rs
@@ -540,7 +540,13 @@ async fn user_cmd(ctx: &Arc<Ctx>, cmd: UserCmd) -> Result<()> {
             let name = name.trim().to_ascii_lowercase();
             let user = ctx.db.user_by_name(&name).await?.ok_or_else(|| anyhow::anyhow!("no such account: {name}"))?;
             ctx.db.set_password(user.id, &crate::auth::hash_password(&read_password()?)?).await?;
-            println!("password changed for {name}");
+            println!("password changed for {name}, and every browser signed in as {name} signed out");
+            let tokens = ctx.db.api_tokens(user.id).await?.len();
+            if tokens > 0 {
+                println!(
+                    "{tokens} API token(s) of {name}'s still work: remove any that may be someone else's in Settings"
+                );
+            }
             Ok(())
         }
         UserCmd::Rename { name, new_name } => {
@@ -641,8 +647,7 @@ async fn daemon(
         let (password, told) = first_password(dir, std::env::var("IPX_ADMIN_PASSWORD").ok())?;
         ctx.db.create_user("admin", Some(&crate::auth::hash_password(&password)?), true).await?;
         tracing::warn!(
-            "no accounts yet: created 'admin' {told}. Sign in and change it, or with \
-             `echo -n <password> | ipx user passwd admin`"
+            "no accounts yet: created 'admin' {told}. Change it with `echo -n <password> | ipx user passwd admin`"
         );
     }
 
diff --git a/docs/cli.md b/docs/cli.md
index 05339d4..e95abe0 100644
--- a/docs/cli.md
+++ b/docs/cli.md
@@ -31,7 +31,7 @@ Passwords are read from **stdin**, so they miss the shell history and any `ps` l
 ```sh
 echo -n 'a good password' | ipx user add ray          # local account
 ipx user add ray@example.com --no-password            # signs in through the proxy only
-echo -n 'a good password' | ipx user passwd admin     # change a password
+echo -n 'a good password' | ipx user passwd admin     # change a password; signs the account out everywhere
 ipx user list                                         # who exists, and how each signs in
 ipx user rm sam                                       # account, subscriptions and read state
 ```