diff --git a/pkgs/flatpak/com.github.rafostar.Clapper-nightly.json b/pkgs/flatpak/com.github.rafostar.Clapper-nightly.json
index 0516efcb..2fcbee17 100644
--- a/pkgs/flatpak/com.github.rafostar.Clapper-nightly.json
+++ b/pkgs/flatpak/com.github.rafostar.Clapper-nightly.json
@@ -66,6 +66,7 @@
         "testing/dav1d.json",
         "testing/gstreamer.json",
         "testing/gst-plugins-rs.json",
+        "testing/graphviz.json",
         {
             "name": "clapper",
             "buildsystem": "meson",
diff --git a/pkgs/flatpak/com.github.rafostar.Clapper.json b/pkgs/flatpak/com.github.rafostar.Clapper.json
index 2f7b6c71..0d7abff2 100644
--- a/pkgs/flatpak/com.github.rafostar.Clapper.json
+++ b/pkgs/flatpak/com.github.rafostar.Clapper.json
@@ -51,6 +51,7 @@
         "flathub/lib/libmicrodns.json",
         "flathub/lib/libpeas.json",
         "flathub/gstreamer-1.0/gstreamer.json",
+        "testing/graphviz.json",
         {
             "name": "clapper",
             "buildsystem": "meson",
diff --git a/pkgs/flatpak/testing/graphviz.json b/pkgs/flatpak/testing/graphviz.json
new file mode 100644
index 00000000..a9f0631a
--- /dev/null
+++ b/pkgs/flatpak/testing/graphviz.json
@@ -0,0 +1,38 @@
+{
+    "name": "graphviz",
+    "buildsystem": "autotools",
+    "config-opts": [
+        "--without-x",
+        "--without-gtk",
+        "--without-gtkgl",
+        "--without-gtkglext",
+        "--without-gdk",
+        "--without-gdk-pixbuf",
+        "--without-qt",
+        "--disable-static",
+        "--disable-sharp",
+        "--disable-go",
+        "--disable-guile",
+        "--disable-java",
+        "--disable-javascript",
+        "--disable-lua",
+        "--disable-perl",
+        "--disable-php",
+        "--disable-python",
+        "--disable-r",
+        "--disable-ruby",
+        "--disable-tcl"
+    ],
+    "cleanup": [
+        "/bin",
+        "/share/man",
+        "/share/graphviz"
+    ],
+    "sources": [
+        {
+            "type": "archive",
+            "url": "https://gitlab.com/api/v4/projects/4207231/packages/generic/graphviz-releases/12.2.1/graphviz-12.2.1.tar.gz",
+            "sha256": "242bc18942eebda6db4039f108f387ec97856fc91ba47f21e89341c34b554df8"
+        }
+    ]
+}