diff --git a/serde_macros/.cargo/config b/serde_macros/.cargo/config
new file mode 100644
index 00000000..7f1ab8d3
--- /dev/null
+++ b/serde_macros/.cargo/config
@@ -0,0 +1,2 @@
+# To prevent compiletest from seeing two versions of serde
+paths = ["../serde"]