diff --git a/cmd/godoc/godoc_test.go b/cmd/godoc/godoc_test.go
index 365a236f..312cfc64 100644
--- a/cmd/godoc/godoc_test.go
+++ b/cmd/godoc/godoc_test.go
@@ -70,6 +70,9 @@ var godocTests = []struct {
 // TODO(adonovan): opt: do this at most once, and do the cleanup
 // exactly once.  How though?  There's no atexit.
 func buildGodoc(t *testing.T) (bin string, cleanup func()) {
+	if runtime.GOARCH == "arm" {
+		t.Skip("skipping test on arm platforms; too slow")
+	}
 	tmp, err := ioutil.TempDir("", "godoc-regtest-")
 	if err != nil {
 		t.Fatal(err)