diff --git a/spec/ruby/core/dir/shared/chroot.rb b/spec/ruby/core/dir/shared/chroot.rb
index b14a433670..7c668c0fbb 100644
--- a/spec/ruby/core/dir/shared/chroot.rb
+++ b/spec/ruby/core/dir/shared/chroot.rb
@@ -3,7 +3,7 @@ describe :dir_chroot_as_root, shared: true do
     DirSpecs.create_mock_dirs
 
     @real_root = "../" * (File.dirname(__FILE__).count('/') - 1)
-    @ref_dir = File.join("/", Dir.new('/').entries.first)
+    @ref_dir = File.join("/", File.basename(Dir["/*"].first))
   end
 
   after :all do
diff --git a/spec/ruby/core/env/shared/update.rb b/spec/ruby/core/env/shared/update.rb
index 3101f9c561..7d4799955b 100644
--- a/spec/ruby/core/env/shared/update.rb
+++ b/spec/ruby/core/env/shared/update.rb
@@ -17,10 +17,9 @@ describe :env_update, shared: true do
 
   ruby_version_is "3.2" do
     it "adds the multiple parameter hashes to ENV, returning ENV" do
-      ENV.send(@method, {"foo" => "0", "bar" => "1"}, {"baz" => "2"}).should equal(ENV)
-      ENV["foo"].should == "0"
-      ENV["bar"].should == "1"
-      ENV["baz"].should == "2"
+      ENV.send(@method, {"foo" => "multi1"}, {"bar" => "multi2"}).should equal(ENV)
+      ENV["foo"].should == "multi1"
+      ENV["bar"].should == "multi2"
     end
   end
 
diff --git a/spec/ruby/library/datetime/to_time_spec.rb b/spec/ruby/library/datetime/to_time_spec.rb
index 88a7aaa739..95eca864da 100644
--- a/spec/ruby/library/datetime/to_time_spec.rb
+++ b/spec/ruby/library/datetime/to_time_spec.rb
@@ -18,7 +18,8 @@ describe "DateTime#to_time" do
     time.sec.should == 59
   end
 
-  version_is(Date::VERSION, '3.2.3') do
+  date_version = defined?(Date::VERSION) ? Date::VERSION : '0.0.0'
+  version_is(date_version, '3.2.3') do
     it "returns a Time representing the same instant before Gregorian" do
       datetime = DateTime.civil(1582, 10, 4, 23, 58, 59)
       time = datetime.to_time.utc
diff --git a/spec/ruby/library/time/to_datetime_spec.rb b/spec/ruby/library/time/to_datetime_spec.rb
index c5561535b2..6025950b59 100644
--- a/spec/ruby/library/time/to_datetime_spec.rb
+++ b/spec/ruby/library/time/to_datetime_spec.rb
@@ -13,7 +13,8 @@ describe "Time#to_datetime" do
     datetime.sec.should == 59
   end
 
-  version_is(Date::VERSION, '3.2.3') do
+  date_version = defined?(Date::VERSION) ? Date::VERSION : '0.0.0'
+  version_is(date_version, '3.2.3') do
     it "returns a DateTime representing the same instant before Gregorian" do
       time = Time.utc(1582, 10, 14, 23, 58, 59)
       datetime = time.to_datetime