diff --git a/.gitignore b/.gitignore
index 71954db3..f2d31748 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+cache/*
 coverage
 .DS_Store
 .DS_Store?
diff --git a/cache/.gitignore b/cache/.gitignore
new file mode 100644
index 00000000..5e7d2734
--- /dev/null
+++ b/cache/.gitignore
@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore
diff --git a/spec/cache/.gitignore b/spec/cache/.gitignore
new file mode 100644
index 00000000..5e7d2734
--- /dev/null
+++ b/spec/cache/.gitignore
@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore