diff --git a/.gitignore b/.gitignore
index 82d9aed..b047674 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,7 @@
 *.o
 
 *.exe
+
+stacktestbench
+cputestbench
+alutestbench
\ No newline at end of file
diff --git a/clean.py b/clean.py
index a0d6806..90c10d7 100644
--- a/clean.py
+++ b/clean.py
@@ -1,20 +1,22 @@
-# remove *.txt, *.cf, *.vcd in the current directory and all subdirectories of "test"
-
 import os
 import glob
 
-# remove all .txt, .cf, and .vcd files in the current directory
-for file in glob.glob("*.txt"):
-    os.remove(file)
-for file in glob.glob("*.cf"):
-    os.remove(file)
-for file in glob.glob("*.vcd"):
+# File extensions to remove
+extensions = (".txt", ".cf", ".vcd", ".o")
+
+# Remove files in the current directory
+for ext in extensions:
+    for file in glob.glob(f"*{ext}"):
+        os.remove(file)
+
+# Remove files ending with "testbench" in the current directory
+for file in glob.glob("*testbench"):
     os.remove(file)
 
-# remove all .txt, .cf, and .vcd files in the test directory
+# Remove files in "test" and its subdirectories
 for root, dirs, files in os.walk("test"):
     for file in files:
-        if file.endswith(".txt") or file.endswith(".cf") or file.endswith(".vcd"):
+        if file.endswith(extensions) or file.endswith("testbench"):
             os.remove(os.path.join(root, file))
 
-print("🧼 Cleaned up files!")
\ No newline at end of file
+print("🧼 Cleaned up files!")