diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5446f9b..7bc96b0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,8 +36,8 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.10'
-          - 'pre'
+          - 'lts'
+          - '1'
         os:
           - ubuntu-latest
           - macOS-latest
diff --git a/Project.toml b/Project.toml
index 14dedd8..725c2b7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -4,11 +4,13 @@ version = "0.14.3"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
-DSP = "717857b8-e6f2-59f4-9121-6e50c889abd2"
 FillArrays = "1a297f60-69ca-5386-bcde-b61e274b549b"
 Infinities = "e1ba4f0e-776d-440f-acd9-e1d2e9742647"
 LazyArrays = "5078a376-72f3-5289-bfd5-ec5146d43c02"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+
+[weakdeps]
+DSP = "717857b8-e6f2-59f4-9121-6e50c889abd2"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
 [compat]
@@ -43,7 +45,3 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
 test = ["Aqua", "Test", "BandedMatrices", "BlockArrays", "Statistics", "SparseArrays", "Base64", "DSP"]
-
-[weakdeps]
-DSP = "717857b8-e6f2-59f4-9121-6e50c889abd2"
-Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
diff --git a/src/InfiniteArrays.jl b/src/InfiniteArrays.jl
index 5854d31..7a86b57 100644
--- a/src/InfiniteArrays.jl
+++ b/src/InfiniteArrays.jl
@@ -16,11 +16,9 @@ import Base: *, +, -, /, <, ==, >, \, ≤, ≥, (:), @propagate_inbounds,
              to_shape, transpose, unaliascopy, union, unitrange_last, unsafe_convert, unsafe_indices, unsafe_length,
              vcat, zeros
 
-if VERSION < v"1.8-"
-   import Base: _rangestyle
-else
-   import Base: range_start_step_length
-end
+
+import Base: range_start_step_length
+
 if VERSION ≥ v"1.11.0-DEV.21"
    using LinearAlgebra: UpperOrLowerTriangular
 else
@@ -210,10 +208,5 @@ end
 
 collect(G::Base.Generator{<:InfRanges}) = BroadcastArray(G.f, G.iter)
 
-if !isdefined(Base, :get_extension)
-    include("../ext/InfiniteArraysStatisticsExt.jl")
-    include("../ext/InfiniteArraysDSPExt.jl")
-end
-
 
 end # module
diff --git a/src/infrange.jl b/src/infrange.jl
index 6814d13..62610f2 100644
--- a/src/infrange.jl
+++ b/src/infrange.jl
@@ -29,17 +29,12 @@ _range(a::Real,          ::Nothing,         ::Nothing, len::InfiniteCardinal{0})
 _range(a::AbstractFloat, ::Nothing,         ::Nothing, len::InfiniteCardinal{0}) = _range(a, oftype(a, 1),   nothing, len)
 _range(a::T, st::T, ::Nothing, ::InfiniteCardinal{0}) where T<:IEEEFloat = InfStepRange{T,T}(a, st)
 _range(a::T, st::T, ::Nothing, ::InfiniteCardinal{0}) where T<:AbstractFloat = InfStepRange{T,T}(a, st)
-if VERSION < v"1.8-"
-    _rangestyle(::Ordered, ::ArithmeticWraps, a::T, step::S, len::InfiniteCardinal{0}) where {T,S} = InfStepRange{T,S}(a, step)
-    _rangestyle(::Ordered, ::ArithmeticUnknown, a::T, step::S, len::InfiniteCardinal{0}) where {T,S} = InfStepRange{T,S}(a, step)
-    _rangestyle(::Any, ::Any, a::T, step::S, len::InfiniteCardinal{0}) where {T,S} = InfStepRange{T,S}(a, step)
-else
-    range_start_step_length(a, st, ::InfiniteCardinal{0}) = InfStepRange(a, st)
-    range_start_step_length(a::Real, st::IEEEFloat, len::InfiniteCardinal{0}) = range_start_step_length(promote(a, st)..., len)
-    range_start_step_length(a::IEEEFloat, st::Real, len::InfiniteCardinal{0}) = range_start_step_length(promote(a, st)..., len)
-    range_start_step_length(a::IEEEFloat, st::IEEEFloat, len::InfiniteCardinal{0}) = range_start_step_length(promote(a, st)..., len)
-    range_start_step_length(a::T, st::T, ::InfiniteCardinal{0}) where T<:IEEEFloat = InfStepRange{T,T}(a, st)
-end
+range_start_step_length(a, st, ::InfiniteCardinal{0}) = InfStepRange(a, st)
+range_start_step_length(a::Real, st::IEEEFloat, len::InfiniteCardinal{0}) = range_start_step_length(promote(a, st)..., len)
+range_start_step_length(a::IEEEFloat, st::Real, len::InfiniteCardinal{0}) = range_start_step_length(promote(a, st)..., len)
+range_start_step_length(a::IEEEFloat, st::IEEEFloat, len::InfiniteCardinal{0}) = range_start_step_length(promote(a, st)..., len)
+range_start_step_length(a::T, st::T, ::InfiniteCardinal{0}) where T<:IEEEFloat = InfStepRange{T,T}(a, st)
+
 
 
 # Construct range for rational start=start_n/den, step=step_n/den
@@ -101,16 +96,14 @@ AbstractMatrix{T}(ac::Transpose{<:Any,<:InfRanges}) where T<:Real = transpose(Ab
 copy(ac::AdjOrTrans{<:Any,<:InfRanges}) = ac
 reverse(a::InfRanges) = throw(ArgumentError("Cannot reverse infinite range"))
 
-if VERSION ≥ v"1.7-"
-    Base.range_start_step_length(a::T, st::T, len::PosInfinity) where T<:Union{Float16,Float32,Float64} = InfStepRange(a, st)
-    for op in (:+, :-)
-        @eval $op(a::InfRanges, b::InfRanges) = InfStepRange($op(first(a),first(b)), $op(step(a),step(b)))
-    end
-    broadcasted(::DefaultArrayStyle{1}, ::typeof(*), x::Number, r::InfRanges) = InfStepRange(x*first(r), x*step(r))
-    broadcasted(::DefaultArrayStyle{1}, ::typeof(*), r::InfRanges, x::Number) = InfStepRange(first(r)*x, step(r)*x)
-    broadcasted(::DefaultArrayStyle{1}, ::typeof(*), x::AbstractFloat, r::InfRanges) = InfStepRange(x*first(r), x*step(r))
-    broadcasted(::DefaultArrayStyle{1}, ::typeof(*), r::InfRanges, x::AbstractFloat) = InfStepRange(first(r)*x, step(r)*x)
+Base.range_start_step_length(a::T, st::T, len::PosInfinity) where T<:Union{Float16,Float32,Float64} = InfStepRange(a, st)
+for op in (:+, :-)
+    @eval $op(a::InfRanges, b::InfRanges) = InfStepRange($op(first(a),first(b)), $op(step(a),step(b)))
 end
+broadcasted(::DefaultArrayStyle{1}, ::typeof(*), x::Number, r::InfRanges) = InfStepRange(x*first(r), x*step(r))
+broadcasted(::DefaultArrayStyle{1}, ::typeof(*), r::InfRanges, x::Number) = InfStepRange(first(r)*x, step(r)*x)
+broadcasted(::DefaultArrayStyle{1}, ::typeof(*), x::AbstractFloat, r::InfRanges) = InfStepRange(x*first(r), x*step(r))
+broadcasted(::DefaultArrayStyle{1}, ::typeof(*), r::InfRanges, x::AbstractFloat) = InfStepRange(first(r)*x, step(r)*x)
 
 
 """
@@ -154,9 +147,7 @@ isempty(r::InfRanges) = false
 step(r::InfStepRange) = r.step
 
 length(r::InfRanges) = ℵ₀
-if VERSION >= v"1.7"
-    Base.checked_length(r::InfRanges) = ℵ₀
-end
+Base.checked_length(r::InfRanges) = ℵ₀
 unsafe_length(r::InfRanges) = ℵ₀
 
 first(r::OneToInf{T}) where {T} = oneunit(T)
@@ -604,9 +595,7 @@ findfirst(::typeof(iszero), r::InfRanges{T}) where {T} = findfirst(==(zero(T)),
 
 FillArrays._range_convert(::Type{AbstractVector{T}}, r::InfRanges) where T = convert(AbstractVector{T}, r)
 
-if VERSION <= v"1.9"
-    permutedims(D::Diagonal{<:Any,<:InfRanges}) = D
-end
+permutedims(D::Diagonal{<:Any,<:InfRanges}) = D
 copy(D::Diagonal{<:Any,<:InfRanges}) = D
 broadcasted(::LazyArrayStyle{2}, ::typeof(*), a::Number, D::Diagonal{<:Any,<:InfRanges}) = a*D
 broadcasted(::LazyArrayStyle{2}, ::typeof(*), D::Diagonal{<:Any,<:InfRanges}, a::Number) = D*a
@@ -629,4 +618,4 @@ end
 # bounds-checking
 function Base.checkindex(::Type{Bool}, inds::NTuple{N, AbstractInfUnitRange}, i::AbstractRange{CartesianIndex{N}}) where {N}
     isempty(i) | checkindex(Bool, inds, first(i))
-end
+end
\ No newline at end of file
diff --git a/test/runtests.jl b/test/runtests.jl
index 3d39749..2a8cfb2 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -167,9 +167,7 @@ end
         @test length(2:-.2:-∞) == ℵ₀
         @test length(2.:-.2:-∞) == ℵ₀
 
-        if VERSION >= v"1.7"
-            @test Base.checked_length(1:∞) == length(1:∞)
-        end
+        @test Base.checked_length(1:∞) == length(1:∞)
 
         @testset "IteratorSize" begin
             @test Base.IteratorSize(1:2:∞) == Base.IsInfinite()
@@ -621,9 +619,7 @@ end
     @test D[:,5][1:10] == D[1:10,5]
     @test D[5,:][1:10] == D[5,1:10]
 
-    if VERSION ≥ v"1.7-"
-        @test D^2 isa Diagonal
-    end
+    @test D^2 isa Diagonal
     @test D*D isa Diagonal
     @test MemoryLayout(typeof(D.diag)) == LazyLayout()
     @test MemoryLayout(typeof(D)) == DiagonalLayout{LazyLayout}()