diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 647b951..ad057fb 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -82,7 +82,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1
         with:
-          version: '1'
+          version: '1.5'
       - run: |
           julia --project=docs -e '
             using Pkg
diff --git a/test/runtests.jl b/test/runtests.jl
index 1c119f1..4dae7e4 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -25,6 +25,6 @@ include("test_data_setup.jl")
     include("JLSOFile.jl")
     include("file_io.jl")
 
-    # Don't worry if our doctests don't match on different architectures or julia releases.
-    Sys.WORD_SIZE == 64 && VERSION >= v"1.5" && doctest(JLSO)
+    # The doctests fail on x86, so only run them on 64-bit hardware & Julia 1.5
+    Sys.WORD_SIZE == 64 && v"1.5" <= VERSION < v"1.6" && doctest(JLSO)
 end