diff --git a/bench/Makefile b/bench/Makefile
index 9bc9482..9efb384 100644
--- a/bench/Makefile
+++ b/bench/Makefile
@@ -17,4 +17,4 @@ gap_buffer_automerge:
 	mlton gap_buffer_automerge.mlb
 
 clean:
-	rm -f gap_buffer_svelte gap_buffer_rust gap_buffer_svelte gap_buffer_automerge
+	rm -f gap_buffer_svelte gap_buffer_rust gap_buffer_seph gap_buffer_automerge
diff --git a/bench/gap_buffer_automerge b/bench/gap_buffer_automerge
deleted file mode 100755
index 6d0df3a..0000000
Binary files a/bench/gap_buffer_automerge and /dev/null differ
diff --git a/bench/gap_buffer_rust b/bench/gap_buffer_rust
deleted file mode 100755
index 088e174..0000000
Binary files a/bench/gap_buffer_rust and /dev/null differ
diff --git a/bench/gap_buffer_seph b/bench/gap_buffer_seph
deleted file mode 100755
index 123475c..0000000
Binary files a/bench/gap_buffer_seph and /dev/null differ
diff --git a/bench/gap_buffer_svelte b/bench/gap_buffer_svelte
deleted file mode 100755
index f0dd485..0000000
Binary files a/bench/gap_buffer_svelte and /dev/null differ