diff --git a/DESCRIPTION b/DESCRIPTION
index 433c8bf..642841b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -19,10 +19,10 @@ License: MIT + file LICENSE
 Encoding: UTF-8
 LazyData: true
 Depends: 
-    R (>= 4.0.0), 
-    ape(>= 5.5)   
+    R (>= 4.0.0)
 biocViews:
-Imports: 
+Imports:
+    ape(>= 5.5), 
     BAT(>= 2.0),
     data.table(>= 1.13),
     dplyr(>= 1.0.1),
@@ -35,11 +35,11 @@ Imports:
     reshape2,
     rlang,
     rnaturalearth,
-    sf,
-    skimr,
+    sf(>= 0.9.4),
+    skimr(>= 2.1.2),
     tidyr,
     utils,
-    vegan
+    vegan(>= 2.5.7)
 Suggests:
     Biostrings,
     BiocManager,