diff --git a/DESCRIPTION b/DESCRIPTION
index 446ef24..f8e7733 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -41,6 +41,7 @@ Imports:
     forcats,
     genieclust,
     ggplot2 (>= 3.3.0),
+    gtools,
     infotheo,
     magrittr,
     MASS,
diff --git a/NAMESPACE b/NAMESPACE
index 693212a..1a6f4e1 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -54,7 +54,9 @@ export(test_permutation)
 export(unnest_mappings)
 export(unnest_reduced)
 import(genieclust)
+import(gtools)
 import(progress)
+import(tibble)
 importFrom(Rcpp,sourceCpp)
 importFrom(ggplot2,geom_density)
 importFrom(graphics,hist)