diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 57d04af..3897f3f 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -22,13 +22,23 @@ jobs:
           - windows-latest
         arch:
           - x64
+          - arm64
+        exclude:
+          - os: macOS-latest
+            arch: x64
+          - os: windows-latest
+            arch: arm64
+          - os: ubuntu-latest
+            arch: arm64
+          - os: macOS-latest
+            version: '1.6'
     steps:
-      - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v7
+      - uses: julia-actions/setup-julia@v3
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v1
+      - uses: actions/cache@v3
         env:
           cache-name: cache-artifacts
         with:
@@ -41,6 +51,6 @@ jobs:
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v7
         with:
           file: lcov.info
diff --git a/src/PythonPlot.jl b/src/PythonPlot.jl
index 2e42ff0..deb7fa4 100755
--- a/src/PythonPlot.jl
+++ b/src/PythonPlot.jl
@@ -180,6 +180,11 @@ for f in plt_funcs
     end
 end
 
+# convert axis(...) return value to Julia Float64 tuple
+@doc LazyHelp(pyplot,"axis") function axis(args...; kws...)
+    return pyconvert(NTuple{4,Float64}, pycall(pyplot."axis", args...; kws...))
+end
+
 # rename to avoid type piracy:
 @doc LazyHelp(pyplot,"step") plotstep(x, y; kws...) = pycall(pyplot.step, x, y; kws...)
 
@@ -199,7 +204,7 @@ plotclose(f::AbstractString) = pyplot.close(f)
 
 # rename to avoid type piracy:
 @doc LazyHelp(pyplot,"fill") plotfill(x::AbstractArray,y::AbstractArray, args...; kws...) =
-    pycall(pyplot.fill, PyAny, x, y, args...; kws...)
+    pycall(pyplot.fill, x, y, args...; kws...)
 
 # consistent capitalization with mplot3d
 @doc LazyHelp(pyplot,"hist2d") hist2D(args...; kws...) = pycall(pyplot.hist2d, args...; kws...)