diff --git a/lib/src/modules/dotnet/tests/testdata/0224ad9739f5fa64a2a63e23ef6a0e3152020fc7964243fc845cad499d11f9ab.out b/lib/src/modules/dotnet/tests/testdata/0224ad9739f5fa64a2a63e23ef6a0e3152020fc7964243fc845cad499d11f9ab.out
index e7dfa181a..0dea9ecee 100644
--- a/lib/src/modules/dotnet/tests/testdata/0224ad9739f5fa64a2a63e23ef6a0e3152020fc7964243fc845cad499d11f9ab.out
+++ b/lib/src/modules/dotnet/tests/testdata/0224ad9739f5fa64a2a63e23ef6a0e3152020fc7964243fc845cad499d11f9ab.out
@@ -70,7 +70,9 @@ assembly_refs:
         build_number: 0
         revision_number: 0
 resources:
-  - name: "\r\n"
+  - name: |
+        
+        
 classes:
   - fullname: "OctopusRPA.Csv.CsvHelper"
     name: "CsvHelper"
diff --git a/proto-yaml/src/lib.rs b/proto-yaml/src/lib.rs
index 1a8829564..e9d89aaef 100644
--- a/proto-yaml/src/lib.rs
+++ b/proto-yaml/src/lib.rs
@@ -337,11 +337,23 @@ impl<W: Write> Serializer<W> {
             ReflectValueRef::F64(v) => write!(self.output, "{v:.1}")?,
             ReflectValueRef::Bool(v) => write!(self.output, "{v}")?,
             ReflectValueRef::String(v) => {
-                write!(
-                    self.output,
-                    "\"{}\"",
-                    Self::escape(v).paint(self.colors.string)
-                )?;
+                if v.contains('\n') {
+                    write!(self.output, "{}", "|".paint(self.colors.string))?;
+                    for line in v.split('\n') {
+                        self.newline()?;
+                        write!(
+                            self.output,
+                            "{}",
+                            line.paint(self.colors.string)
+                        )?;
+                    }
+                } else {
+                    write!(
+                        self.output,
+                        "\"{}\"",
+                        Self::escape(v).paint(self.colors.string)
+                    )?;
+                }
             }
             ReflectValueRef::Bytes(v) => {
                 write!(
diff --git a/proto-yaml/src/tests/testdata/1.out b/proto-yaml/src/tests/testdata/1.out
index 1ea436dfe..89c648ced 100644
--- a/proto-yaml/src/tests/testdata/1.out
+++ b/proto-yaml/src/tests/testdata/1.out
@@ -4,14 +4,18 @@ int32_dec: 123
 str: "foo"
 repeated_msg:
   - int32_dec: 456
-    str: "bar\nbar"
+    str: |
+        bar
+        bar
   - int32_dec: 789
     str: "foo\\bar"
     map_string_string:
         "foo\nbar": "bar"
 nested_msg:
     int32_dec: 1234
-    str: "qux\nfoo"
+    str: |
+        qux
+        foo
     map_string_string:
         "bar": "baz"
         "foo": "bar"
\ No newline at end of file