diff --git a/zig-impl/.gitignore b/zig-impl/.gitignore
index 4c82b07..f5d5fc9 100644
--- a/zig-impl/.gitignore
+++ b/zig-impl/.gitignore
@@ -1,2 +1,3 @@
 zig-cache
 zig-out
+docs
diff --git a/zig-impl/makefile b/zig-impl/makefile
index d3e1dd3..033ed65 100644
--- a/zig-impl/makefile
+++ b/zig-impl/makefile
@@ -20,7 +20,7 @@ doc: src/ipcd.zig
 	$(ZIGC) build-exe $(ZIGOPTS) $(ZIGMAKEDOC) $^
 
 TO_CLEAN != ls misc/*.zig | sed 's/.zig$\//' | sed 's_misc/__'
-TO_CLEAN += ipcd
+TO_CLEAN += ipcd pong pongd
 TO_CLEAN += *.o
 clean:
 	@-rm $(TO_CLEAN) 2>/dev/null