diff --git a/src/js/calculator/helsinki_benefit_amount_estimate/tests/.nvmrc b/src/js/calculator/helsinki_benefit_amount_estimate/tests/.nvmrc
new file mode 100644
index 000000000..209e3ef4b
--- /dev/null
+++ b/src/js/calculator/helsinki_benefit_amount_estimate/tests/.nvmrc
@@ -0,0 +1 @@
+20