diff --git a/.gitignore b/.gitignore
index 5d83845..412e3d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,14 +1,28 @@
+# C compilation artifacts
 .obj/
-*.swp
-*.swo
-*~
+*.o
 *.bin
 *.dfu
 *.ihex
 *.elf
+
+# Swapfiles
+*.swp
+*.swo
+*~
+
 .vscode/
-build/
+
+# Python cache files
 __pycache__/
 *.pyc
+
+# Environment files generated by lxbuildenv
+.env
+
+# Output from LiteX
+build/
 test/
-.env
\ No newline at end of file
+
+# Output from yosys
+abc.history
\ No newline at end of file