diff --git a/src/similar_convert_copy.jl b/src/similar_convert_copy.jl
index 39027a92..ccc78377 100644
--- a/src/similar_convert_copy.jl
+++ b/src/similar_convert_copy.jl
@@ -4,7 +4,9 @@ const CombinedCombinedAnyDims = Tuple{<:CombinedAxis, <:CombinedAxis, Vararg{<:C
 
 # Similar
 Base.similar(x::ComponentArray) = ComponentArray(similar(getdata(x)), getaxes(x)...)
-Base.similar(x::ComponentArray, ::Type{T}) where T = ComponentArray(similar(getdata(x), T), getaxes(x)...)
+Base.similar(x::ComponentArray, ::Type{T}) where {T} = ComponentArray(similar(getdata(x), T), getaxes(x)...)
+Base.similar(x::ComponentArray, dims::Vararg{Int}) = similar(getdata(x), dims...)
+Base.similar(x::ComponentArray, ::Type{T}, dims::Vararg{Int}) where {T} = similar(getdata(x), T, dims...)
 Base.similar(x::AbstractArray, dims::CombinedAnyDims) = _similar(x, dims)
 Base.similar(x::AbstractArray, dims::AnyCombinedAnyDims) = _similar(x, dims)
 Base.similar(x::AbstractArray, dims::CombinedCombinedAnyDims) = _similar(x, dims)
diff --git a/test/Project.toml b/test/Project.toml
index 3d5d8bc1..7ac6831f 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -1,6 +1,5 @@
 [deps]
 ArrayInterfaceCore = "30b0a656-2188-435a-8636-2ec0e6a096e2"
-ChainRulesTestUtils = "cdddcdb0-9152-4a09-a978-84456f9df70a"
 FiniteDiff = "6a86dc24-6348-571c-b903-95158fe2bd41"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 InvertedIndices = "41ab1584-1d38-5bbf-9106-f11c6c58b48f"
diff --git a/test/gpu_tests.jl b/test/gpu_tests.jl
index 5a1a67f9..3188eafd 100644
--- a/test/gpu_tests.jl
+++ b/test/gpu_tests.jl
@@ -21,4 +21,7 @@ jlca = ComponentArray(jla, Axis(a=1:2, b=3:4))
     @test mapreduce(abs2, +, jlca) == 30
 
     @test all(map(sin, jlca) .== sin.(jlca) .== sin.(jla) .≈ sin.(1:4))
+
+    # Issue #179
+    @test similar(jlca, 5) isa typeof(jla)
 end
diff --git a/test/runtests.jl b/test/runtests.jl
index c1b58c49..4531fb86 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -344,10 +344,13 @@ end
 end
 
 @testset "Similar" begin
-    @test typeof(similar(ca)) == typeof(ca)
-    @test typeof(similar(ca2)) == typeof(ca2)
-    @test typeof(similar(ca, Float32)) == typeof(ca_Float32)
+    @test similar(ca) isa typeof(ca)
+    @test similar(ca2) isa typeof(ca2)
+    @test similar(ca, Float32) isa typeof(ca_Float32)
     @test eltype(similar(ca, ForwardDiff.Dual)) == ForwardDiff.Dual
+    @test similar(ca, 5) isa typeof(getdata(ca))
+    @test similar(ca, Float32, 5) isa typeof(getdata(ca_Float32))
+    @test similar(cmat, 5, 5) isa typeof(getdata(cmat))
 end
 
 @testset "Copy" begin