diff --git a/Project.toml b/Project.toml
index db85d59..55f1677 100644
--- a/Project.toml
+++ b/Project.toml
@@ -37,7 +37,7 @@ Unicode = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
 CoordinateTransformations = "0.5, 0.6, 0.8, 0.9"
 DocStringExtensions = "0.7, 0.8, 0.9"
 KernelDensityEstimate = "0.5.6"
-Manifolds = "0.5"
+Manifolds = "0.5, 0.6"
 ManifoldsBase = "0.11, 0.12"
 NLsolve = "3, 4"
 Optim = "0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 1"