diff --git a/Project.toml b/Project.toml
index 8d7b540..70cc2e4 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "NLPModelsIpopt"
 uuid = "f4238b75-b362-5c4c-b852-0801c9a21d71"
-version = "0.9.0"
+version = "0.9.1"
 
 [deps]
 Ipopt = "b6b21f68-93f8-5de0-b562-5493be1d77c9"
diff --git a/docs/src/tutorial.md b/docs/src/tutorial.md
index dcd46df..2b6c508 100644
--- a/docs/src/tutorial.md
+++ b/docs/src/tutorial.md
@@ -31,7 +31,7 @@ For comparison, we present the same problem and output using JuMP:
 ```@example ex2
 using JuMP, Ipopt
 
-model = Model(with_optimizer(Ipopt.Optimizer))
+model = Model(Ipopt.Optimizer)
 x0 = [-1.2; 1.0]
 @variable(model, x[i=1:2], start=x0[i])
 @NLobjective(model, Min, (x[1] - 1)^2 + 100 * (x[2] - x[1]^2)^2)