diff --git a/Project.toml b/Project.toml
index 7535449..4e3cfef 100644
--- a/Project.toml
+++ b/Project.toml
@@ -18,4 +18,4 @@ SplitApplyCombine = "03a91e81-4c3e-53e1-a0a4-9c0c8f19dd66"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
-ITensorNetworks = "0.4"
+ITensorNetworks = "0.6.0"
diff --git a/examples/2d_laplace_solver.jl b/examples/2d_laplace_solver.jl
index 46f4bf4..7167d2e 100644
--- a/examples/2d_laplace_solver.jl
+++ b/examples/2d_laplace_solver.jl
@@ -11,11 +11,7 @@ using NamedGraphs:
   random_bfs_tree,
   undirected_graph
 using ITensors: ITensors, Index, siteinds, dim, tags, replaceprime!, MPO, MPS, inner
-using ITensorNetworks:
-  ITensorNetwork,
-  dmrg,
-  TTN,
-  maxlinkdim
+using ITensorNetworks: ITensorNetwork, dmrg, TTN, maxlinkdim
 using Dictionaries: Dictionary
 using SplitApplyCombine: group
 using Random: seed!
diff --git a/src/itensornetworkfunction.jl b/src/itensornetworkfunction.jl
index fd46125..bf81398 100644
--- a/src/itensornetworkfunction.jl
+++ b/src/itensornetworkfunction.jl
@@ -53,7 +53,8 @@ function project(fitn::ITensorNetworkFunction, vertex_to_bit_value_map)
   fitn = copy(fitn)
   s = siteinds(fitn)
   for v in keys(vertex_to_bit_value_map)
-    fitn[v] = fitn[v] * onehot(only(s[v]) => vertex_to_bit_value_map[v] + 1)
+    fitn[v] =
+      fitn[v] * onehot(eltype(fitn[v]), only(s[v]) => vertex_to_bit_value_map[v] + 1)
   end
   return fitn
 end
diff --git a/src/itensornetworks_elementary_functions.jl b/src/itensornetworks_elementary_functions.jl
index fe7e24a..ae6392a 100644
--- a/src/itensornetworks_elementary_functions.jl
+++ b/src/itensornetworks_elementary_functions.jl
@@ -249,7 +249,7 @@ function polynomial_itensornetwork(
 end
 
 function random_itensornetwork(s::IndsNetwork, bit_map; kwargs...)
-  return ITensorNetworkFunction(randomITensorNetwork(s; kwargs...), bit_map)
+  return ITensorNetworkFunction(random_tensornetwork(s; kwargs...), bit_map)
 end
 
 const const_itn = const_itensornetwork
diff --git a/src/itensornetworks_elementary_operators.jl b/src/itensornetworks_elementary_operators.jl
index 608da0b..b8a5845 100644
--- a/src/itensornetworks_elementary_operators.jl
+++ b/src/itensornetworks_elementary_operators.jl
@@ -12,7 +12,7 @@ using ITensors:
   prime,
   noprime!,
   contract
-using ITensorNetworks: IndsNetwork, ITensorNetwork, TTN, TreeTensorNetwork, combine_linkinds
+using ITensorNetworks: IndsNetwork, ITensorNetwork, TreeTensorNetwork, combine_linkinds, ttn
 
 function plus_shift_ttn(
   s::IndsNetwork, bit_map; dimension=default_dimension(), boundary_value=[0.0]
@@ -31,7 +31,7 @@ function plus_shift_ttn(
     add!(ttn_op, 1.0, (string_site...)...)
   end
 
-  return TTN(ttn_op, s; algorithm="svd")
+  return ttn(ttn_op, s; algorithm="svd")
 end
 
 function minus_shift_ttn(s::IndsNetwork, bit_map; dimension=default_dimension())
@@ -49,14 +49,14 @@ function minus_shift_ttn(s::IndsNetwork, bit_map; dimension=default_dimension())
     add!(ttn_op, 1.0, (string_site...)...)
   end
 
-  return TTN(ttn_op, s; algorithm="svd")
+  return ttn(ttn_op, s; algorithm="svd")
 end
 
 function no_shift_ttn(s::IndsNetwork)
   ttn_op = OpSum()
   string_site_full = [("I", v) for v in vertices(s)]
   add!(ttn_op, 1.0, (string_site_full...)...)
-  return TTN(ttn_op, s; algorithm="svd")
+  return ttn(ttn_op, s; algorithm="svd")
 end
 
 function stencil(
@@ -145,7 +145,7 @@ Base.:*(fs::ITensorNetworkFunction...) = multiply(fs...)
 function operate(
   operator::TreeTensorNetwork, ψ::ITensorNetworkFunction; truncate_kwargs=(;), kwargs...
 )
-  ψ_tn = TTN(itensornetwork(ψ))
+  ψ_tn = ttn(itensornetwork(ψ))
   ψO_tn = noprime(contract(operator, ψ_tn; init=prime(copy(ψ_tn)), kwargs...))
   ψO_tn = truncate(ψO_tn; truncate_kwargs...)
 
@@ -153,7 +153,7 @@ function operate(
 end
 
 function operate(operator::ITensorNetwork, ψ::ITensorNetworkFunction; kwargs...)
-  return operate(TTN(operator), ψ; kwargs...)
+  return operate(ttn(operator), ψ; kwargs...)
 end
 
 function operate(
@@ -169,5 +169,5 @@ end
 function operate(
   operators::Vector{ITensorNetwork{V}}, ψ::ITensorNetworkFunction; kwargs...
 ) where {V}
-  return operate(TTN.(operators), ψ; kwargs...)
+  return operate(ttn.(operators), ψ; kwargs...)
 end
diff --git a/src/itensornetworksutils.jl b/src/itensornetworksutils.jl
index 2b70f77..9d4fe15 100644
--- a/src/itensornetworksutils.jl
+++ b/src/itensornetworksutils.jl
@@ -1,5 +1,5 @@
 using ITensors: Index, dim, inds
-using ITensorNetworks: randomITensorNetwork, IndsNetwork
+using ITensorNetworks: random_tensornetwork, IndsNetwork
 
 """Build the order L tensor corresponding to fx(x): x ∈ [0,1]."""
 function build_full_rank_tensor(L::Int64, fx::Function; base::Int64=2)
@@ -31,7 +31,7 @@ function c_tensor(phys_ind::Index, virt_inds::Vector)
 end
 
 function copy_tensor_network(s::IndsNetwork; linkdim::Int64=1)
-  tn = randomITensorNetwork(s; link_space=linkdim)
+  tn = random_tensornetwork(s; link_space=linkdim)
   for v in vertices(tn)
     virt_inds = setdiff(inds(tn[v]), Index[only(s[v])])
     tn[v] = c_tensor(only(s[v]), virt_inds)
diff --git a/test/test_itensorfunction.jl b/test/test_itensorfunction.jl
index e3989fa..dc32f9f 100644
--- a/test/test_itensorfunction.jl
+++ b/test/test_itensorfunction.jl
@@ -4,7 +4,7 @@ using TensorNetworkFunctionals
 using Graphs: SimpleGraph, uniform_tree
 using NamedGraphs: NamedGraph, named_grid, vertices, named_comb_tree, rename_vertices
 using ITensors: siteinds
-using ITensorNetworks: randomITensorNetwork
+using ITensorNetworks: random_tensornetwork
 using Dictionaries: Dictionary
 using SplitApplyCombine: group
 using Random: seed!
@@ -16,7 +16,7 @@ using Distributions: Uniform
   g = named_grid((L, 1))
   s = siteinds("S=1/2", g)
 
-  ψ = randomITensorNetwork(s; link_space=2)
+  ψ = random_tensornetwork(s; link_space=2)
 
   fψ = ITensorNetworkFunction(ψ)