diff --git a/.travis.yml b/.travis.yml
index ac63ebe7..b5310403 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ julia:
   - 1.2
   - 1.3
   - 1.4
+  - 1.5
   - nightly
 
 cache:
@@ -24,7 +25,7 @@ env:
 jobs:
   include:
     - stage: "Documentation"
-      julia: 1.3
+      julia: 1.4
       os: osx
       script:
         - julia --project=docs/ -e 'using Pkg; Pkg.instantiate();
diff --git a/appveyor.yml b/appveyor.yml
index 6b27876e..d3403fb1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,7 +1,7 @@
 environment:
   matrix:
-  - julia_version: 0.7
   - julia_version: 1.0
+  - julia_version: 1.4
   - julia_version: latest
 
 platform:
diff --git a/test/circlecircletangent-test.jl b/test/circlecircletangent-test.jl
index d150cba3..42b6bffa 100644
--- a/test/circlecircletangent-test.jl
+++ b/test/circlecircletangent-test.jl
@@ -56,7 +56,7 @@ function circlecircletangent_test2(fname)
 
             pt1, pt2, pt3, pt4 = circlecircleinnertangents(c1center, c1radius, c2center, c2radius)
 
-            if !all(isapprox(O), (pt1, pt2, pt3, pt4))
+            if !all(pt -> isequal(pt, O), (pt1, pt2, pt3, pt4))
                 sethue("green")
                 circle(c2center, c2radius, :stroke)
                 circle(c1center, c1radius, :stroke)
@@ -68,7 +68,7 @@ function circlecircletangent_test2(fname)
 
             pt1, pt2, pt3, pt4 = circlecircleoutertangents(c1center, c1radius, c2center, c2radius)
 
-            if !all(isapprox(O), (pt1, pt2, pt3, pt4))
+            if !all(pt -> isequal(pt, O), (pt1, pt2, pt3, pt4))
                 sethue("red")
                 arrow(pt1, pt2, linewidth=2)
                 arrow(pt3, pt4, linewidth=2)