--- a/spec/facter/facter_spec.rb
+++ b/spec/facter/facter_spec.rb
@@ -598,7 +598,12 @@ describe Facter do
       context 'when exception and message are hashes' do
         let(:message) { { 'a': 1 } }
         let(:exception) { { 'b': 2 } }
-        let(:expected_message) { '{:a=>1}' }
+        # https://bugs.ruby-lang.org/issues/20433
+        if RUBY_VERSION >= '3.4'
+          let(:expected_message) { '{a: 1}' }
+        else
+          let(:expected_message) { '{:a=>1}' }
+        end
 
         it_behaves_like 'when exception param is not an exception'
       end
@@ -682,7 +687,12 @@ describe Facter do
       context 'when exception and message are hashes' do
         let(:message) { { 'a': 1 } }
         let(:exception) { { 'b': 2 } }
-        let(:expected_message) { '{:a=>1}' }
+        # https://bugs.ruby-lang.org/issues/20433
+        if RUBY_VERSION >= '3.4'
+          let(:expected_message) { '{a: 1}' }
+        else
+          let(:expected_message) { '{:a=>1}' }
+        end
 
         it_behaves_like 'when exception param is not an exception'
       end
@@ -808,7 +818,12 @@ describe Facter do
     end
 
     it 'when message is a hash' do
-      expect(logger).to receive(:warn).with('{:warn=>"message"}')
+      # https://bugs.ruby-lang.org/issues/20433
+      if RUBY_VERSION >= '3.4'
+        expect(logger).to receive(:warn).with('{warn: "message"}')
+      else
+        expect(logger).to receive(:warn).with('{:warn=>"message"}')
+      end
 
       Facter.warn({ warn: 'message' })
     end