diff --git a/NEWS.md b/NEWS.md
index 1591b41..8427748 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,7 @@
 # probably (development version)
 
+* Fixed `int_conformal_quantile()` so that it works when dplyr is not attached. An internal call to `select()` was not namespaced (#198).
+
 * Fixed `cal_plot_breaks()`, `cal_plot_logistic()`, and `cal_plot_windowed()` so that plots of tuning results with more than one model configuration can be rendered. The grouping column was dropped before the plot was faceted (#202).
 
 # probably 1.2.0
diff --git a/R/conformal_infer_quantile.R b/R/conformal_infer_quantile.R
index c3a033f..f0e215e 100644
--- a/R/conformal_infer_quantile.R
+++ b/R/conformal_infer_quantile.R
@@ -152,7 +152,7 @@ quant_train <- function(train_data, y_name, ...) {
   cl <- rlang::call2(
     "quantregForest",
     .ns = "quantregForest",
-    x = quote(train_data |> select(-dplyr::all_of(y_name))),
+    x = quote(dplyr::select(train_data, -dplyr::all_of(y_name))),
     y = quote(train_data[[y_name]]),
     ...
   )