diff --git a/agb-hashmap/rust-toolchain.toml b/agb-hashmap/rust-toolchain.toml
new file mode 100644
index 00000000..13933df8
--- /dev/null
+++ b/agb-hashmap/rust-toolchain.toml
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "nightly"
+components = ["miri"]