diff --git a/build-aux/flatpak/org.gnome.Calendar.json b/build-aux/flatpak/org.gnome.Calendar.json
index 55dd2043..dd8e74d0 100644
--- a/build-aux/flatpak/org.gnome.Calendar.json
+++ b/build-aux/flatpak/org.gnome.Calendar.json
@@ -167,6 +167,23 @@
                 }
             ]
         },
+        {
+            "name" : "libhandy",
+            "buildsystem" : "meson",
+            "config-opts" : [
+                "-Dexamples=false",
+                "-Dglade_catalog=disabled",
+                "-Dintrospection=disabled",
+                "-Dtests=false",
+                "-Dvapi=false"
+            ],
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://source.puri.sm/Librem5/libhandy.git"
+                }
+            ]
+        },
         {
             "name" : "gnome-calendar",
             "buildsystem" : "meson",
diff --git a/meson.build b/meson.build
index 42e6b943..18c49d6f 100644
--- a/meson.build
+++ b/meson.build
@@ -158,6 +158,7 @@ libedataserver_dep = dependency('libedataserver-1.2', version: '>= 3.17.1')
 libecal_dep = dependency('libecal-2.0', version: '>= 3.33.2')
 libsoup_dep = dependency('libsoup-2.4')
 libdazzle_dep = dependency('libdazzle-1.0', version: '>= 3.33.1')
+libhandy_dep = dependency('libhandy-0.0', version: '>= 0.0.9')
 glib_dep = dependency('glib-2.0', version: '>= 2.58.0')
 gtk_dep = dependency('gtk+-3.0', version: '>= 3.22.20')
 gio_dep = dependency('gio-2.0', version: '>= 2.58.0')
diff --git a/src/meson.build b/src/meson.build
index b71bb89d..8815b6b9 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -9,6 +9,7 @@ gcal_deps = [
   libdazzle_dep,
   libsoup_dep,
   libical_dep,
+  libhandy_dep,
   glib_dep,
   gtk_dep,
   gio_dep,