diff --git a/Cargo.lock b/Cargo.lock
index 5a77f43..2b111ea 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1865,9 +1865,9 @@ dependencies = [
 
 [[package]]
 name = "rtrb"
-version = "0.3.5"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fae8ee26b0371a29a77d2b2d6b3ae13aa81def6f9bf1b1b92a32d279a5e709b7"
+checksum = "9278fb35b3e730abe136e9b395b5b81b96d06b9f5478a50f0c8430a2237b22de"
 
 [[package]]
 name = "rustc-hash"
diff --git a/crates/pipedeck-engine/Cargo.toml b/crates/pipedeck-engine/Cargo.toml
index a97a0b2..e59e4f2 100644
--- a/crates/pipedeck-engine/Cargo.toml
+++ b/crates/pipedeck-engine/Cargo.toml
@@ -21,7 +21,7 @@ nnnoiseless = "0.5.2"
 serde_json = "1"
 # The soundboard: its files decoded, and handed to the audio thread.
 symphonia = { version = "0.5", default-features = false, features = ["mp3", "ogg", "vorbis", "flac", "wav", "pcm"] }
-rtrb = "0.3"
+rtrb = "0.4"
 # Opus, which Discord's soundboards are often in, from the system's libopus.
 symphonia-adapter-libopus = { version = "0.2.9", default-features = false }