diff --git a/build-aux/flatpak/org.gnome.Loupe.Devel.json b/build-aux/flatpak/org.gnome.Loupe.Devel.json
index 4ce6a64..81813ea 100644
--- a/build-aux/flatpak/org.gnome.Loupe.Devel.json
+++ b/build-aux/flatpak/org.gnome.Loupe.Devel.json
@@ -4,7 +4,8 @@
     "runtime-version" : "master",
     "sdk" : "org.gnome.Sdk",
     "sdk-extensions" : [
-        "org.freedesktop.Sdk.Extension.rust-stable"
+        "org.freedesktop.Sdk.Extension.rust-stable",
+        "org.freedesktop.Sdk.Extension.llvm14"
     ],
     "command" : "loupe",
     "finish-args" : [
@@ -21,7 +22,17 @@
         "append-path" : "/usr/lib/sdk/rust-stable/bin",
         "build-args" : [
             "--share=network"
-        ]
+        ],
+        "append-path" : "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm14/bin",
+        "build-args" : [
+            "--share=network"
+        ],
+        "env" : {
+            "CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER" : "clang",
+            "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER" : "clang",
+            "CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUSTFLAGS" : "-C link-arg=-fuse-ld=/usr/lib/sdk/rust-stable/bin/mold",
+            "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUSTFLAGS" : "-C link-arg=-fuse-ld=/usr/lib/sdk/rust-stable/bin/mold"
+        }
     },
     "cleanup" : [
         "/include",