diff --git a/spec/std/log/metadata_spec.cr b/spec/std/log/metadata_spec.cr
index 884a4f9e2898..ba0b9c1a616d 100644
--- a/spec/std/log/metadata_spec.cr
+++ b/spec/std/log/metadata_spec.cr
@@ -28,6 +28,14 @@ describe Log::Metadata do
     m({a: 1}).extend({} of Symbol => String).should_not be_empty
   end
 
+  describe "#dup" do
+    it "creates a shallow copy" do
+      Log::Metadata.empty.dup.should eq(Log::Metadata.empty)
+      m({a: 1}).dup.should eq(m({a: 1}))
+      m({a: 1, b: 3}).dup.should eq(m({a: 1, b: 3}))
+    end
+  end
+
   it "extend" do
     m({a: 1}).extend({b: 2}).should eq(m({a: 1, b: 2}))
     m({a: 1, b: 3}).extend({b: 2}).should eq(m({a: 1, b: 2}))
diff --git a/src/log/metadata.cr b/src/log/metadata.cr
index 258b1b817c52..b1ea8ae38fa9 100644
--- a/src/log/metadata.cr
+++ b/src/log/metadata.cr
@@ -37,6 +37,10 @@ class Log::Metadata
     data
   end
 
+  def dup : self
+    self
+  end
+
   protected def setup(@parent : Metadata?, entries : NamedTuple | Hash)
     @size = @overridden_size = entries.size
     @max_total_size = @size + (@parent.try(&.max_total_size) || 0)