diff --git a/src/banded/bidiagonalconjugation.jl b/src/banded/bidiagonalconjugation.jl
index f98936b..5d541e6 100644
--- a/src/banded/bidiagonalconjugation.jl
+++ b/src/banded/bidiagonalconjugation.jl
@@ -85,7 +85,7 @@ function resizedata!(data::BidiagonalConjugationData, n)
     return _compute_columns!(data, 2n)
 end
 
-struct BidiagonalConjugationBand{T} <: AbstractCachedVector{T}
+struct BidiagonalConjugationBand{T} <: LazyVector{T}
     data::BidiagonalConjugationData{T}
     diag::Bool # true => diagonal, false => offdiagonal 
 end
diff --git a/test/test_bidiagonalconjugation.jl b/test/test_bidiagonalconjugation.jl
index 79db456..bad9396 100644
--- a/test/test_bidiagonalconjugation.jl
+++ b/test/test_bidiagonalconjugation.jl
@@ -1,3 +1,8 @@
+using InfiniteLinearAlgebra, InfiniteRandomArrays, BandedMatrices, LazyArrays, LazyBandedMatrices, InfiniteArrays, ArrayLayouts, Test
+using InfiniteLinearAlgebra: BidiagonalConjugation, OneToInf
+using ArrayLayouts: supdiagonaldata, subdiagonaldata, diagonaldata
+using LazyArrays: LazyLayout
+
 @testset "BidiagonalConjugationData" begin
     @test InfiniteLinearAlgebra._to_uplo('U') == 'U'
     @test InfiniteLinearAlgebra._to_uplo('L') == 'L'