diff --git a/tests/platform-ci/.ruby-version b/tests/platform-ci/.ruby-version
new file mode 100644
index 0000000000000000000000000000000000000000..8dbb0f26baeec6968ac7102de5089f033b4139c6
--- /dev/null
+++ b/tests/platform-ci/.ruby-version
@@ -0,0 +1 @@
+2.1.10