diff --git a/.changeset/dull-ducks-melt.md b/.changeset/dull-ducks-melt.md
new file mode 100644
index 0000000000..2bffab7a15
--- /dev/null
+++ b/.changeset/dull-ducks-melt.md
@@ -0,0 +1,5 @@
+---
+"@pnpm/workspace.manifest-writer": patch
+---
+
+Don't wrap lines in `pnpm-workspace.yaml`.
diff --git a/workspace/manifest-writer/src/index.ts b/workspace/manifest-writer/src/index.ts
index 77d94bf4fb..576b68d0b1 100644
--- a/workspace/manifest-writer/src/index.ts
+++ b/workspace/manifest-writer/src/index.ts
@@ -26,5 +26,11 @@ export async function updateWorkspaceManifest (dir: string, updatedFields: Parti
     await fs.promises.rm(path.join(dir, WORKSPACE_MANIFEST_FILENAME))
     return
   }
-  await writeYamlFile(path.join(dir, WORKSPACE_MANIFEST_FILENAME), manifest)
+  await writeYamlFile(path.join(dir, WORKSPACE_MANIFEST_FILENAME), manifest, {
+    lineWidth: -1, // This is setting line width to never wrap
+    blankLines: true,
+    noCompatMode: true,
+    noRefs: true,
+    sortKeys: false,
+  })
 }