diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index 758033a..208602d 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -68,6 +68,8 @@ jobs:
       - uses: actions/checkout@v1
       - name: perl -V
         run: perl -V
+      - name: Install dependencies
+        run: curl -sL https://git.io/cpm | perl - install -g --with-recommends --with-test --with-configure --show-build-log-on-failure
       - name: Makefile.PL
         run: perl -I$(pwd) Makefile.PL
       - name: make test
diff --git a/Makefile.PL b/Makefile.PL
index c329829..f68c97a 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -16,7 +16,7 @@ WriteMakefile(
     'NAME'          => 'JSON::PP',
     'VERSION_FROM'  => 'lib/JSON/PP.pm', # finds $VERSION
     'PREREQ_PM'     => {
-              'Test::More'  => 0,
+              'Test::More'  => 0.88,
               'Scalar::Util' => '1.08'
     },
     'EXE_FILES' => [ 'bin/json_pp' ],
diff --git a/lib/JSON/PP.pm b/lib/JSON/PP.pm
index eca2897..c910561 100644
--- a/lib/JSON/PP.pm
+++ b/lib/JSON/PP.pm
@@ -450,7 +450,8 @@ sub allow_bigint {
         $self->_down_indent() if ($self->{PROPS}[P_INDENT]);
 
         return '[]' unless @res;
-        return '[' . $pre . join( ",$pre", @res ) . $post . ']';
+        my $space = $pre eq '' && $self->{PROPS}[P_SPACE_AFTER] ? ' ' : '';
+        return '[' . $pre . join( ",$space$pre", @res ) . $post . ']';
     }
 
     sub _looks_like_number {
diff --git a/t/gh_89_space_after_comma.t b/t/gh_89_space_after_comma.t
new file mode 100644
index 0000000..fd3a48a
--- /dev/null
+++ b/t/gh_89_space_after_comma.t
@@ -0,0 +1,15 @@
+use strict;
+use warnings;
+use Test::More;
+
+BEGIN { $ENV{PERL_JSON_BACKEND} = 0; }
+
+my @candidates = qw(JSON::PP JSON::XS Cpanel::JSON::XS);
+
+for my $json_module (@candidates) {
+    eval "require $json_module; 1" or next;
+    my $got = $json_module->new->utf8->space_after(1)->encode({x=>[1,2]});
+    is $got => qq!{"x": [1, 2]}!, "$json_module has a space after 1";
+}
+
+done_testing;