diff --git a/org.gnome.Geary.json b/org.gnome.Geary.json
index 39aa1e21..a27be0c6 100644
--- a/org.gnome.Geary.json
+++ b/org.gnome.Geary.json
@@ -216,7 +216,7 @@
                 {
                     "type": "git",
                     "url": "https://gitlab.gnome.org/GNOME/libpeas.git",
-                    "branch": "master"
+                    "commit": "7f245fa5158204621c3469756a951b68a651c4fe"
                 }
             ]
         },