diff --git a/bent-funny-zone/Cargo.toml b/bent-funny-zone/Cargo.toml
index 6a70bfb..aec3e0f 100644
--- a/bent-funny-zone/Cargo.toml
+++ b/bent-funny-zone/Cargo.toml
@@ -14,4 +14,4 @@ keywords.workspace = true
 anyhow = "1.0.86"
 bmp = "0.5.0"
 dasp_sample = "0.11.0"
-synfx-dsp = "0.5.6"
+fundsp = { version = "0.18.1", default-features = false, features = ["std"] }