diff --git a/Project.toml b/Project.toml
index d786ac1..a3d374a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -11,7 +11,9 @@ Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
-julia = "^1.0"
+julia = "1"
+Distributions = "0.16, 0.17, 0.18, 0.19, 0.20, 0.24, 0.25"
+ForwardDiff = "0.9, 0.10"
 
 [extras]
 NBInclude = "0db19996-df87-5ea3-a455-e3a50d440464"