diff --git a/.gitignore b/.gitignore
index c0b10be..f4243d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,5 @@
 *.cache
 openflowj-loxi
 /bin
+*,cover
+/.coverage
diff --git a/Makefile b/Makefile
index 3767fba..018db0b 100644
--- a/Makefile
+++ b/Makefile
@@ -142,4 +142,13 @@
 ctags:
 	ctags ${LOXI_PY_FILES} ${LOXI_TEMPLATE_FILES} ${INPUT_FILES} ${TEST_DATA}
 
-.PHONY: all clean debug check pylint c python
+coverage:
+	find -name '*,cover' -exec rm {} \;
+	coverage erase
+	coverage run -a ./loxigen.py --lang=c
+	coverage run -a ./loxigen.py --lang=python
+	coverage run -a ./loxigen.py --lang=java
+	coverage run -a ./loxigen.py --lang=wireshark
+	coverage annotate -i --omit tenjin.py,pyparsing.py
+
+.PHONY: all clean debug check pylint c python coverage