diff --git a/org.gnome.Geary.json b/org.gnome.Geary.json
index 7f697756..6a3cc18b 100644
--- a/org.gnome.Geary.json
+++ b/org.gnome.Geary.json
@@ -45,6 +45,17 @@
         "*.a"
     ],
     "modules": [
+        {
+            "name" : "libproxy",
+            "buildsystem" : "meson",
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://github.com/libproxy/libproxy.git",
+                    "branch" : "main"
+                }
+            ]
+        },
         {
             "name": "gnome-online-accounts",
             "buildsystem": "meson",