diff --git a/src/components.jl b/src/components.jl
index 2b1284ce2..e7d3cc5d4 100644
--- a/src/components.jl
+++ b/src/components.jl
@@ -443,7 +443,7 @@ mutable struct SeriesAnnotations
 end
 function series_annotations(strs::AbstractVector, args...)
     fnt = font()
-    shp = Nullable{Any}()
+    shp = Union{Any, Nothing}()
     scalefactor = (1,1)
     for arg in args
         if isa(arg, Shape) || (isa(arg, AbstractVector) && eltype(arg) == Shape)
diff --git a/src/plot.jl b/src/plot.jl
index 2b7ab3895..8b9c8c44a 100644
--- a/src/plot.jl
+++ b/src/plot.jl
@@ -1,8 +1,8 @@
 
 mutable struct CurrentPlot
-    nullableplot::Nullable{AbstractPlot}
+    nullableplot::Union{AbstractPlot, Nothing}
 end
-const CURRENT_PLOT = CurrentPlot(Nullable{AbstractPlot}())
+const CURRENT_PLOT = CurrentPlot(Union{AbstractPlot, Nothing}())
 
 isplotnull() = isnull(CURRENT_PLOT.nullableplot)