diff --git a/tests/testthat/test-adjust-predictions-custom.R b/tests/testthat/test-adjust-predictions-custom.R
index c346696..037dcc3 100644
--- a/tests/testthat/test-adjust-predictions-custom.R
+++ b/tests/testthat/test-adjust-predictions-custom.R
@@ -41,6 +41,8 @@ test_that("basic adjust_predictions_custom() usage works", {
 })
 
 test_that("adjust_predictions_custom() for numerics works without setting type (#61)", {
+  skip_if_not_installed("probably")
+
   library(tibble)
 
   set.seed(1)