diff --git a/.changeset/long-stars-tie.md b/.changeset/long-stars-tie.md
new file mode 100644
index 00000000..5db8fbdc
--- /dev/null
+++ b/.changeset/long-stars-tie.md
@@ -0,0 +1,5 @@
+---
+"changesets-gitlab": patch
+---
+
+fix: encode `username` in URL
diff --git a/src/main.ts b/src/main.ts
index e830b720..5eabf022 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -42,7 +42,7 @@ export const main = async ({
         'remote',
         'set-url',
         'origin',
-        `${url.protocol}//${username}:${GITLAB_TOKEN}@${
+        `${url.protocol}//${encodeURIComponent(username)}:${GITLAB_TOKEN}@${
           url.host
         }${url.pathname.replace(/\/$/, '')}/${env.CI_PROJECT_PATH}.git`,
       ],