diff --git a/wasm/libp2p-nym/.cargo/config.toml b/wasm/libp2p-nym/.cargo/config.toml
new file mode 100644
index 0000000000..ed20a145c3
--- /dev/null
+++ b/wasm/libp2p-nym/.cargo/config.toml
@@ -0,0 +1,3 @@
+[env]
+# Increase wasm-bindgen-test timeout for headless browser tests (default is 20 but we need far longer)
+WASM_BINDGEN_TEST_TIMEOUT = "300"