diff --git a/.gitignore b/.gitignore
index fb1a162b..156c9d08 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ docs/site/
 docs/Manifest.toml
 Manifest.toml
 benchmark/*.json
+.vscode
diff --git a/src/circ_deque.jl b/src/circ_deque.jl
index 3159d7d6..a6520e5f 100644
--- a/src/circ_deque.jl
+++ b/src/circ_deque.jl
@@ -12,6 +12,7 @@ end
 Create a double-ended queue of maximum capacity `n`, implemented as a circular buffer. The element type is `T`.
 """
 CircularDeque{T}(n::Int) where {T} = CircularDeque(Vector{T}(undef, n), n, 0, 1, n)
+CircularDeque{T}(n::Integer) where {T} = CircularDeque(Vector{T}(undef, Int(n)), Int(n), 0, 1, Int(n))
 
 Base.length(D::CircularDeque) = D.n
 Base.eltype(::Type{CircularDeque{T}}) where {T} = T
diff --git a/src/circular_buffer.jl b/src/circular_buffer.jl
index e1a6a88d..88459d8f 100644
--- a/src/circular_buffer.jl
+++ b/src/circular_buffer.jl
@@ -19,18 +19,21 @@ mutable struct CircularBuffer{T} <: AbstractVector{T}
         len <= length(buf) || throw(ArgumentError("Value of 'length' must be <= length of buffer"))
         return new{T}(length(buf), f, len, buf)
     end
+
+    # Convert any `Integer` to whatever `Int` is on the relevant machine
+    CircularBuffer{T}(f::Integer, len::Integer, buf::Integer) where {T} = CircularBuffer{T}(Int(f), Int(len), Int(buf))
 end
 
-function CircularBuffer{T}(iter, capacity::Int) where {T}
+function CircularBuffer{T}(iter, capacity::Integer) where {T}
     vec = copyto!(Vector{T}(undef,capacity), iter)
     CircularBuffer{T}(1, length(iter),vec)
 end
 
-CircularBuffer(capacity::Int) = CircularBuffer{Any}(capacity)
+CircularBuffer(capacity::Integer) = CircularBuffer{Any}(capacity)
 
-CircularBuffer{T}(capacity::Int) where {T} = CircularBuffer{T}(T[],capacity)
+CircularBuffer{T}(capacity::Integer) where {T} = CircularBuffer{T}(T[],capacity)
 
-CircularBuffer(iter,capacity::Int) =  CircularBuffer{eltype(iter)}(iter,capacity)
+CircularBuffer(iter,capacity::Integer) =  CircularBuffer{eltype(iter)}(iter,capacity)
 
 function CircularBuffer{T}(iter) where {T}
   vec = reshape(collect(T,iter),:) 
diff --git a/src/deque.jl b/src/deque.jl
index ce4544b1..1ba54c13 100644
--- a/src/deque.jl
+++ b/src/deque.jl
@@ -20,13 +20,16 @@ mutable struct DequeBlock{T}
         blk.next = blk
         return blk
     end
+
+    # Convert any `Integer` to whatever `Int` is on the relevant machine
+    DequeBlock{T}(capa::Integer, front::Integer) where T = DequeBlock{T}(Int(capa), Int(front))
 end
 
 # block at the rear of the chain, elements towards the front
-rear_deque_block(ty::Type{T}, n::Int) where {T} = DequeBlock{T}(n, 1)
+rear_deque_block(ty::Type{T}, n::Integer) where {T} = DequeBlock{T}(n, 1)
 
 # block at the head of the train, elements towards the back
-head_deque_block(ty::Type{T}, n::Int) where {T} = DequeBlock{T}(n, n+1)
+head_deque_block(ty::Type{T}, n::Integer) where {T} = DequeBlock{T}(n, n+1)
 
 capacity(blk::DequeBlock) = blk.capa
 Base.length(blk::DequeBlock) = blk.back - blk.front + 1
@@ -37,7 +40,7 @@ isrear(blk::DequeBlock) =  blk.next === blk
 
 # reset the block to empty, and position
 
-function reset!(blk::DequeBlock{T}, front::Int) where T
+function reset!(blk::DequeBlock{T}, front::Integer) where T
     empty!(blk.data)
     resize!(blk.data, blk.capa)
     blk.front = front
@@ -80,7 +83,7 @@ mutable struct Deque{T}
     head::DequeBlock{T}
     rear::DequeBlock{T}
 
-    function Deque{T}(blksize::Int) where T
+    function Deque{T}(blksize::Integer) where T
         head = rear = rear_deque_block(T, blksize)
         new{T}(1, blksize, 0, head, rear)
     end