diff --git a/Project.toml b/Project.toml
index b30d1ce..f05eabe 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "InfiniteArrays"
 uuid = "4858937d-0d70-526a-a4dd-2d5cb5dd786c"
-version = "0.12.8"
+version = "0.12.9"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
diff --git a/src/infrange.jl b/src/infrange.jl
index 92f0fd2..ce4cf1e 100644
--- a/src/infrange.jl
+++ b/src/infrange.jl
@@ -89,6 +89,8 @@ AbstractVector{T}(a::InfStepRange) where T<:Real = InfStepRange(convert(T,a.star
 const InfRanges{T} = Union{InfStepRange{T},AbstractInfUnitRange{T}}
 const InfAxes = Union{InfRanges{<:Integer},Slice{<:AbstractInfUnitRange{<:Integer}},IdentityUnitRange{<:AbstractInfUnitRange{<:Integer}}}
 
+Base.IteratorSize(::Type{<:InfRanges}) = Base.IsInfinite()
+
 AbstractArray{T}(ac::Adjoint{<:Any,<:InfRanges}) where T<:Real = AbstractArray{T}(parent(ac))'
 AbstractMatrix{T}(ac::Adjoint{<:Any,<:InfRanges}) where T<:Real = AbstractVector{T}(parent(ac))'
 AbstractArray{T}(ac::Transpose{<:Any,<:InfRanges}) where T<:Real = transpose(AbstractArray{T}(parent(ac)))
diff --git a/test/runtests.jl b/test/runtests.jl
index f898b16..f04f89c 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -160,6 +160,14 @@ end
         @test length(1.:.2:∞) == ℵ₀
         @test length(2:-.2:-∞) == ℵ₀
         @test length(2.:-.2:-∞) == ℵ₀
+
+        @testset "IteratorSize" begin
+            @test Base.IteratorSize(1:2:∞) == Base.IsInfinite()
+            @test Base.IteratorSize(1:∞) == Base.IsInfinite()
+            s = Iterators.Stateful(2:∞)
+            @test first(s) == 2
+            @test first(s) == 3
+        end
     end
 
     @testset "intersect" begin