diff --git a/REQUIRE b/REQUIRE
index e6fa8e9a..f0e6ec4b 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -1,2 +1,3 @@
 julia 0.5
 StatsBase
+Compat 0.18
diff --git a/src/UnicodePlots.jl b/src/UnicodePlots.jl
index b4240c58..9db1931b 100644
--- a/src/UnicodePlots.jl
+++ b/src/UnicodePlots.jl
@@ -1,7 +1,8 @@
-isdefined(Base, :__precompile__) && __precompile__()
+__precompile__()
 module UnicodePlots
 
 using Base.Dates
+using Compat
 import StatsBase: Histogram, fit
 
 export
diff --git a/src/canvas.jl b/src/canvas.jl
index 02c6fe2e..c3ce8589 100644
--- a/src/canvas.jl
+++ b/src/canvas.jl
@@ -1,5 +1,5 @@
-abstract GraphicsArea
-abstract Canvas <: GraphicsArea
+@compat abstract type GraphicsArea end
+@compat abstract type Canvas <: GraphicsArea end
 
 origin(c::Canvas) = (origin_x(c), origin_y(c))
 Base.size(c::Canvas) = (width(c), height(c))
diff --git a/src/graphics/asciicanvas.jl b/src/graphics/asciicanvas.jl
index 45a1fa47..bb050d29 100644
--- a/src/graphics/asciicanvas.jl
+++ b/src/graphics/asciicanvas.jl
@@ -3,7 +3,7 @@ const ascii_signs = [0b100_000_000 0b000_100_000 0b000_000_100;
                      0b001_000_000 0b000_001_000 0b000_000_001]
 
 const ascii_lookup = Dict{UInt16,Char}()
-const ascii_decode = Array(Char, 512)
+const ascii_decode = Vector{Char}(512)
 ascii_lookup[0b101_000_000] = '"'
 ascii_lookup[0b111_111_111] = '@'
 ascii_lookup[0b011_110_011] = '$'
diff --git a/src/graphics/bargraphics.jl b/src/graphics/bargraphics.jl
index e4561838..4331b68d 100644
--- a/src/graphics/bargraphics.jl
+++ b/src/graphics/bargraphics.jl
@@ -1,3 +1,5 @@
+if VERSION < v"0.6-"
+    _type_string = """
 type BarplotGraphics{R<:Real} <: GraphicsArea
     bars::Vector{R}
     color::Symbol
@@ -17,6 +19,31 @@ type BarplotGraphics{R<:Real} <: GraphicsArea
         new(bars, color, width, max_freq, max_len, symb)
     end
 end
+"""
+else
+    _type_string = """
+type BarplotGraphics{R<:Real} <: GraphicsArea
+    bars::Vector{R}
+    color::Symbol
+    width::Int
+    max_freq::R
+    max_len::R
+    symb::AbstractString
+
+    function BarplotGraphics{R}(
+            bars::Vector{R},
+            width::Int,
+            color::Symbol,
+            symb) where R
+        width = max(width, 5)
+        max_freq = maximum(bars)
+        max_len = length(string(max_freq))
+        new(bars, color, width, max_freq, max_len, symb)
+    end
+end
+"""
+end
+include_string(_type_string)
 
 nrows(c::BarplotGraphics) = length(c.bars)
 ncols(c::BarplotGraphics) = c.width
diff --git a/src/graphics/blockcanvas.jl b/src/graphics/blockcanvas.jl
index dcccaae2..1aee1d89 100644
--- a/src/graphics/blockcanvas.jl
+++ b/src/graphics/blockcanvas.jl
@@ -1,7 +1,7 @@
 const block_signs = [0b1000 0b0010;
                      0b0100 0b0001]
 
-const block_decode = Array(Char, 16)
+const block_decode = Vector{Char}(16)
 block_decode[0b0000 + 1] = ' '
 block_decode[0b0001 + 1] = '▗'
 block_decode[0b0010 + 1] = '▖'
diff --git a/src/graphics/dotcanvas.jl b/src/graphics/dotcanvas.jl
index 2eceb7b1..00ba1935 100644
--- a/src/graphics/dotcanvas.jl
+++ b/src/graphics/dotcanvas.jl
@@ -1,6 +1,6 @@
 const dot_signs = [0b10 0b01]
 
-const dot_decode = Array(Char, 5)
+const dot_decode = Array{Char}(5)
 dot_decode[0b00 + 1] = ' '
 dot_decode[0b01 + 1] = '.'
 dot_decode[0b10 + 1] = '\''
diff --git a/src/graphics/lookupcanvas.jl b/src/graphics/lookupcanvas.jl
index 5e93afea..f0a34289 100644
--- a/src/graphics/lookupcanvas.jl
+++ b/src/graphics/lookupcanvas.jl
@@ -1,4 +1,4 @@
-abstract LookupCanvas <: Canvas
+@compat abstract type LookupCanvas <: Canvas end
 
 lookup_encode(::LookupCanvas) = error()
 lookup_decode(::LookupCanvas) = error()
diff --git a/src/interface/histogram.jl b/src/interface/histogram.jl
index f1322ca8..4752c025 100644
--- a/src/interface/histogram.jl
+++ b/src/interface/histogram.jl
@@ -82,8 +82,12 @@ See also
 function histogram(v, bins::Int; symb = "▇", args...)
     result = fit(Histogram, v; nbins = bins)
     edges, counts = result.edges[1], result.weights
-    labels = Array(String, length(counts))
-    binwidth = edges.step / edges.divisor
+    labels = Vector{String}(length(counts))
+    @static if VERSION < v"0.6.0-dev.2390"
+        binwidth = edges.step / edges.divisor
+    else
+        binwidth = edges.step.hi
+    end
     @inbounds for i in 1:length(counts)
         val = float_round_log10(edges[i], binwidth)
         labels[i] = string("(", val, ",", float_round_log10(val+binwidth, binwidth), "]")
diff --git a/src/interface/lineplot.jl b/src/interface/lineplot.jl
index 68c20ab0..f40a38b3 100644
--- a/src/interface/lineplot.jl
+++ b/src/interface/lineplot.jl
@@ -289,7 +289,7 @@ function lineplot{D<:TimeType, R<:Real}(
         X::AbstractVector{D},
         Y::AbstractVector{R};
         args...)
-    d = convert(Vector{Float64}, X)
+    d = convert(Vector{Float64}, Dates.value.(X))
     new_plot = lineplot(d, Y; args...)
     annotate!(new_plot, :bl, string(first(X)))
     annotate!(new_plot, :br, string(last(X)))
diff --git a/src/interface/spy.jl b/src/interface/spy.jl
index a9517e0a..0974b60b 100644
--- a/src/interface/spy.jl
+++ b/src/interface/spy.jl
@@ -176,7 +176,7 @@ function spy{T<:Canvas}(
                 color)
     else
         pos_idx = vals .> 0
-        neg_idx = !pos_idx
+        neg_idx = (!).(pos_idx)
         pos_cols = cols[pos_idx]
         pos_rows = rows[pos_idx]
         neg_cols = cols[neg_idx]