diff --git a/base/multidimensional.jl b/base/multidimensional.jl
index 32d66c4c54cda..9acb97a486fbb 100644
--- a/base/multidimensional.jl
+++ b/base/multidimensional.jl
@@ -278,6 +278,7 @@ module IteratorsMD
 
     CartesianIndices(A::AbstractArray) = CartesianIndices(axes(A))
 
+    _convert2ind(sz::Bool) = Base.OneTo(Int(sz))
     _convert2ind(sz::Integer) = Base.OneTo(sz)
     _convert2ind(sz::AbstractUnitRange) = first(sz):last(sz)
     _convert2ind(sz::OrdinalRange) = first(sz):step(sz):last(sz)
diff --git a/test/cartesian.jl b/test/cartesian.jl
index af0bc466e3d04..8d2651b6f425f 100644
--- a/test/cartesian.jl
+++ b/test/cartesian.jl
@@ -409,3 +409,10 @@ end
 # issue #39705
 f39705() = Base.Cartesian.@nany 0 _ -> true
 @test f39705() === false
+
+@testset "CartesianIndices with Bool" begin
+    @test @inferred(CartesianIndices((true,))) == CartesianIndices((1,))
+    @test @inferred(CartesianIndices((false,))) == CartesianIndices((0,))
+    @test @inferred(CartesianIndices((true, false))) == CartesianIndices((1, 0))
+    @test @inferred(CartesianIndices((false, true))) == CartesianIndices((0, 1))
+end