diff --git a/news/changelog-1.8.md b/news/changelog-1.8.md
index 6b8920d826..8143040b6f 100644
--- a/news/changelog-1.8.md
+++ b/news/changelog-1.8.md
@@ -107,3 +107,4 @@ All changes included in 1.8:
 - ([#12782](https://github.com/quarto-dev/quarto-cli/pull/12782)): fix bug on `safeRemoveDirSync`'s detection of safe directory boundaries.
 - ([#12853](https://github.com/quarto-dev/quarto-cli/issues/12853)): fix replaceAll() escaping issue with embedded notebooks containing `$` in their Markdown.
 - ([#12939](https://github.com/quarto-dev/quarto-cli/pull/12939)): Upgrade `mermaidjs` to 11.6.0.
+- ([#13031](https://github.com/quarto-dev/quarto-cli/pull/13031)): Add `.quarto_ipynb` files to `.gitignore` by default.
\ No newline at end of file
diff --git a/src/project/project-gitignore.ts b/src/project/project-gitignore.ts
index ef781ab7fb..779a09b085 100644
--- a/src/project/project-gitignore.ts
+++ b/src/project/project-gitignore.ts
@@ -15,7 +15,7 @@ import { lines } from "../core/text.ts";
 import { isEnvDir } from "../core/jupyter/capabilities.ts";
 import { isWindows } from "../deno_ral/platform.ts";
 
-export const kQuartoIgnore = [`/${kQuartoScratch}/`];
+export const kQuartoIgnore = [`/${kQuartoScratch}/`, `**/*.quarto_ipynb`];
 
 export async function ensureGitignore(
   dir: string,