diff --git a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/NamedDimsArraysTensorAlgebraExt.jl b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/NamedDimsArraysTensorAlgebraExt.jl
index f9dc5aaa15..a397507f44 100644
--- a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/NamedDimsArraysTensorAlgebraExt.jl
+++ b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/NamedDimsArraysTensorAlgebraExt.jl
@@ -1,5 +1,6 @@
 module NamedDimsArraysTensorAlgebraExt
 include("contract.jl")
+include("fusedims.jl")
 include("qr.jl")
 include("eigen.jl")
 include("svd.jl")
diff --git a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/eigen.jl b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/eigen.jl
index d62a77c6d1..01905313f8 100644
--- a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/eigen.jl
+++ b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/eigen.jl
@@ -1,8 +1,8 @@
 ## using ..ITensors: IndexID
 using LinearAlgebra: LinearAlgebra, Hermitian, eigen
 ## using ..NDTensors.DiagonalArrays: DiagonalMatrix
-using ..NDTensors.NamedDimsArrays: AbstractNamedDimsArray, dimnames, name, unname
-using ..NDTensors: Spectrum, truncate!!
+using ...NDTensors.NamedDimsArrays: AbstractNamedDimsArray, dimnames, name, unname
+## using ...NDTensors: Spectrum, truncate!!
 function LinearAlgebra.eigen(
   na::Hermitian{T,<:AbstractNamedDimsArray{T}};
   mindim=nothing,
diff --git a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/fusedims.jl b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/fusedims.jl
index d74d733ad6..50c21ccf88 100644
--- a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/fusedims.jl
+++ b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/fusedims.jl
@@ -1,3 +1,5 @@
+using ...NDTensors.TensorAlgebra: fusedims, splitdims
+
 function TensorAlgebra.fusedims(na::AbstractNamedDimsArray, fusions::Pair...)
   # TODO: generalize to multiple fused groups of dimensions
   @assert isone(length(fusions))
diff --git a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/qr.jl b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/qr.jl
index 6e79d27529..c46155d12e 100644
--- a/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/qr.jl
+++ b/NDTensors/src/NamedDimsArrays/ext/NamedDimsArraysTensorAlgebraExt/src/qr.jl
@@ -1,6 +1,6 @@
-using ..ITensors: IndexID
+# using ..ITensors: IndexID
 using LinearAlgebra: LinearAlgebra, qr
-using ..NDTensors.NamedDimsArrays: AbstractNamedDimsArray, dimnames, name, unname
+using ...NDTensors.NamedDimsArrays: AbstractNamedDimsArray, dimnames, name, unname
 function LinearAlgebra.qr(na::AbstractNamedDimsArray; positive=nothing)
   # TODO: Make this more systematic.
   i, j = dimnames(na)
diff --git a/NDTensors/test/ITensors/Project.toml b/NDTensors/test/ITensors/Project.toml
new file mode 100644
index 0000000000..7ee8b76af0
--- /dev/null
+++ b/NDTensors/test/ITensors/Project.toml
@@ -0,0 +1,4 @@
+[deps]
+ITensors = "9136182c-28ba-11e9-034c-db9fb085ebd5"
+NDTensors = "23ae76d9-e61a-49c4-8f12-3f1a16adf9cf"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"