diff --git a/DESCRIPTION b/DESCRIPTION
index 7d93b1f5..be9020b2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -29,7 +29,8 @@ Imports:
     purrr (>= 1.0.0),
     rlang (>= 1.0.0),
     stringr,
-    tibble
+    tibble,
+    assertthat
 Suggests:
     knitr,
     rmarkdown,