diff --git a/tests/testthat/setup.R b/tests/testthat/setup.R
new file mode 100644
index 0000000000..0841dd8120
--- /dev/null
+++ b/tests/testthat/setup.R
@@ -0,0 +1 @@
+local_igraph_options(add.vertex.names = TRUE, .in = testthat::teardown_env())