diff --git a/.bzrignore b/.bzrignore
index e893a7dfcfc..15fa1e88cf5 100644
--- a/.bzrignore
+++ b/.bzrignore
@@ -40,3 +40,6 @@ __pycache__
 .coverage
 coverage/*
 htmlcov/*
+.coverage
+coverage/*
+htmlcov/*
diff --git a/.gitignore b/.gitignore
index 63f4314e054..dafc9a9a27d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,3 +45,6 @@ tags
 .coverage
 coverage/
 htmlcov/
+.coverage
+coverage/
+htmlcov/
diff --git a/.hgignore b/.hgignore
index 6a2615b94b2..efb013e74b9 100644
--- a/.hgignore
+++ b/.hgignore
@@ -73,3 +73,6 @@ Modules/_testembed
 .coverage
 coverage/
 htmlcov/
+.coverage
+coverage/
+htmlcov/