diff --git a/docs/Project.toml b/docs/Project.toml
index 845e9b0..3d162a2 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -23,7 +23,7 @@ LogDensityProblems = "2"
 MCMCDiagnosticTools = "0.3"
 PDMats = "0.11"
 Plots = "1"
-PrettyTables = "2"
+PrettyTables = "2, 3"
 Random = "1"
 SliceSampling = "0.7.1"
 StableRNGs = "1"