diff --git a/.ideal/.gitignore b/.ideal/.gitignore
new file mode 100644
index 00000000..44ade528
--- /dev/null
+++ b/.ideal/.gitignore
@@ -0,0 +1,3 @@
+# Per-user IDE state
+/shelf/
+/changelists.json
diff --git a/.openidea/.gitignore b/.openidea/.gitignore
new file mode 100644
index 00000000..44ade528
--- /dev/null
+++ b/.openidea/.gitignore
@@ -0,0 +1,3 @@
+# Per-user IDE state
+/shelf/
+/changelists.json
diff --git a/fixtures/rust-app/.openidea/.gitignore b/fixtures/rust-app/.openidea/.gitignore
new file mode 100644
index 00000000..44ade528
--- /dev/null
+++ b/fixtures/rust-app/.openidea/.gitignore
@@ -0,0 +1,3 @@
+# Per-user IDE state
+/shelf/
+/changelists.json