diff --git a/docs/testing.md b/docs/testing.md
index da077be..e4fec11 100644
--- a/docs/testing.md
+++ b/docs/testing.md
@@ -22,5 +22,6 @@
 2. `export OP_CONNECT_TOKEN=<token>`
 3. `export OP_SERVICE_ACCOUNT_TOKEN=<token>`
 4. `make test-e2e`
+5. Put `1password-credentials.json` into project root.
 
 **Run**: `make test-e2e`
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