diff --git a/crates/vt_pty_terminal_test/README.md b/crates/vt_pty_terminal_test/README.md
index ef12ca326..d9b5f374f 100644
--- a/crates/vt_pty_terminal_test/README.md
+++ b/crates/vt_pty_terminal_test/README.md
@@ -48,7 +48,7 @@ assert!(status.success());
 Milestones are encoded as unique window titles:
 
 ```text
-pty-terminal-test:<32-hex-random-id>:<name-base64url>
+vt-pty-terminal-test:<32-hex-random-id>:<name-base64url>
 ```
 
 `Reader::expect_milestone` works like this:
diff --git a/crates/vt_pty_terminal_test_client/src/lib.rs b/crates/vt_pty_terminal_test_client/src/lib.rs
index 028818d41..3b1aa31dc 100644
--- a/crates/vt_pty_terminal_test_client/src/lib.rs
+++ b/crates/vt_pty_terminal_test_client/src/lib.rs
@@ -1,6 +1,6 @@
 use base64::{Engine as _, engine::general_purpose::URL_SAFE_NO_PAD};
 
-const MILESTONE_TITLE_MARKER: &str = "pty-terminal-test:";
+const MILESTONE_TITLE_MARKER: &str = "vt-pty-terminal-test:";
 
 #[cfg(any(feature = "testing", test))]
 fn encode_milestone_title(name: &str) -> String {
@@ -99,9 +99,9 @@ mod tests {
     #[test]
     fn ignores_normal_and_malformed_titles() {
         assert!(decode_milestone_title(b"normal title").is_none());
-        assert!(decode_milestone_title(b"pty-terminal-test:not-hex:cmVhZHk").is_none());
+        assert!(decode_milestone_title(b"vt-pty-terminal-test:not-hex:cmVhZHk").is_none());
         assert!(
-            decode_milestone_title(b"pty-terminal-test:00000000000000000000000000000000:*")
+            decode_milestone_title(b"vt-pty-terminal-test:00000000000000000000000000000000:*")
                 .is_none()
         );
     }
diff --git a/crates/vt_socket_ipc/src/unix.rs b/crates/vt_socket_ipc/src/unix.rs
index 7698ac81c..283f357f7 100644
--- a/crates/vt_socket_ipc/src/unix.rs
+++ b/crates/vt_socket_ipc/src/unix.rs
@@ -74,7 +74,7 @@ pub struct Server {
 
 impl Server {
     pub fn bind() -> io::Result<Self> {
-        let dir = tempfile::Builder::new().prefix("socket_ipc_").tempdir()?;
+        let dir = tempfile::Builder::new().prefix("vt_socket_ipc_").tempdir()?;
         let root = AbsolutePath::new(dir.path())
             .expect("temp directories are absolute")
             .to_absolute_path_buf();
diff --git a/crates/vt_socket_ipc/src/windows.rs b/crates/vt_socket_ipc/src/windows.rs
index 94b3f03f3..5c4cdd453 100644
--- a/crates/vt_socket_ipc/src/windows.rs
+++ b/crates/vt_socket_ipc/src/windows.rs
@@ -27,7 +27,7 @@ impl Server {
             clippy::disallowed_macros,
             reason = "the generated pipe name exceeds Str inline capacity"
         )]
-        let name = OsString::from(format!(r"\\.\pipe\socket_ipc_{}", uuid::Uuid::new_v4()));
+        let name = OsString::from(format!(r"\\.\pipe\vt_socket_ipc_{}", uuid::Uuid::new_v4()));
         let pending = ServerOptions::new().first_pipe_instance(true).create(&name)?;
         Ok(Self { name, pending })
     }