diff --git a/Project.toml b/Project.toml
index b2a59d9..3bdce97 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,16 +19,16 @@ AxisArrays = "0.4"
 DataFrames = "0.21, 0.22, 1.0"
 Distances = "0.10"
 EcoBase = "0.1"
-InteractiveUtils = "1.9"
-LinearAlgebra = "1.9"
+InteractiveUtils = "1.8"
+LinearAlgebra = "1.8"
 Missings = "0.4, 1.0"
 Phylo = "0.4"
 RCall = "0.13"
 RecipesBase = "0.6, 0.7, 0.8, 1"
 Requires = "^1"
-Statistics = "1.9"
+Statistics = "1.8"
 StatsBase = "0.32, 0.33, 0.34"
-julia = "1.9"
+julia = "1.8"
 
 [extras]
 Distances = "b4f34e82-e78d-54a5-968a-f98e89d6e8f7"