diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..da04b443
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "secp256k1-frost-kmp"]
+	path = secp256k1-frost-kmp
+	url = https://github.com/ac-cord-ac/secp256k1-frost-kmp.git
+[submodule "lightning-kmp-app"]
+	path = lightning-kmp-app
+	url = https://github.com/kngako/lightning-kmp-app.git
diff --git a/composeApp/build.gradle.kts b/composeApp/build.gradle.kts
index 335ed72d..d3a2975d 100644
--- a/composeApp/build.gradle.kts
+++ b/composeApp/build.gradle.kts
@@ -1,6 +1,5 @@
 import org.jetbrains.compose.desktop.application.dsl.TargetFormat
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
-import javax.inject.Inject
 
 plugins {
     alias(libs.plugins.androidApplication)
@@ -89,8 +88,10 @@ kotlin {
 
 
 
-            implementation(libs.lightning.kmp.app)
-            implementation(libs.lightning.kmp.core)
+//            implementation(libs.lightning.kmp.core)
+
+            // resolved via the lightning-kmp-app composite build (see settings.gradle.kts)
+            implementation("fr.acinq.phoenix:lightning-kmp-app:1.0.0")
 
             implementation(libs.navigation.compose)
 
@@ -105,6 +106,9 @@ kotlin {
 
             implementation("com.ionspin.kotlin:bignum:0.3.10")
 
+            // resolved via the secp256k1-frost-kmp composite build (see settings.gradle.kts)
+            implementation("ac.cord.auxiliary:library:1.0.0")
+
             implementation("no.synth:kmp-zip:0.8.0")
             implementation("no.synth:kmp-zip-okio:0.8.0")
         }
@@ -156,37 +160,7 @@ android {
     }
 }
 
-// JitPack rewrites the version inside a published .module file, and in doing so drops the classifier
-// from every artifact name -- so lightning-kmp-app's apple targets advertise their host-specific
-// metadata as `library-<target>-<ver>.jar` when it is actually served as `...-<ver>-metadata.jar`.
-// The klib and the aar are unaffected (android compiles either way); this only bites the metadata
-// compilations, which is what every shared ios source set resolves through. Restore the classifier.
-abstract class RestoreJitPackClassifier @Inject constructor(
-    private val variant: String,
-) : ComponentMetadataRule {
-    override fun execute(context: ComponentMetadataContext) {
-        val id = context.details.id
-        context.details.withVariant(variant) {
-            withFiles {
-                removeAllFiles()
-                addFile("${id.name}-${id.version}-metadata.jar")
-            }
-        }
-    }
-}
-
 dependencies {
-    components {
-        mapOf(
-            "library-iosarm64" to "iosArm64MetadataElements-published",
-            "library-iossimulatorarm64" to "iosSimulatorArm64MetadataElements-published",
-        ).forEach { (module, variant) ->
-            withModule<RestoreJitPackClassifier>("com.github.kngako.lightning-kmp-app:$module") {
-                params(variant)
-            }
-        }
-    }
-
     debugImplementation(libs.compose.uiTooling)
 //    ksp(libs.androidx.room3.compiler)
     add("kspAndroid", libs.androidx.room3.compiler)
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 5ac4f03f..17b8cb8d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -21,10 +21,6 @@ kotlinx-datetime = "0.8.0"
 kotlinxSerialization = "1.11.0"
 ksp = "2.3.6"
 ktor = "3.5.2"
-# pinned to a commit, not master-SNAPSHOT: jitpack advertises a unique-snapshot maven-metadata for
-# -SNAPSHOT versions but serves the files under their literal -SNAPSHOT names, so gradle looks for
-# library-<target>-master-<sha>-1.klib and gets a 404. bump this when the fork moves.
-lightningKmpApp = "59cc3e3c15"
 lightningKmpCore = "1.11.5"
 material3 = "1.10.0-alpha05"
 materialIconsCore = "1.7.3"
@@ -80,7 +76,6 @@ ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor" }
 ktor-client-cio = { module = "io.ktor:ktor-client-cio", version.ref = "ktor" }
 ktor-client-websockets = { module = "io.ktor:ktor-client-websockets", version.ref = "ktor" }
 ktor-serialization-kotlinx-json = { module = "io.ktor:ktor-serialization-kotlinx-json", version.ref = "ktor" }
-lightning-kmp-app = { module = "com.github.kngako.lightning-kmp-app:library", version.ref = "lightningKmpApp" }
 lightning-kmp-core = { module = "fr.acinq.lightning:lightning-kmp-core", version.ref = "lightningKmpCore" }
 navigation-compose = { module = "org.jetbrains.androidx.navigation:navigation-compose", version.ref = "navigationCompose" }
 okhttp-coroutines = { group = "com.squareup.okhttp3", name = "okhttp-coroutines", version.ref = "okhttp" }
diff --git a/lightning-kmp-app b/lightning-kmp-app
new file mode 160000
index 00000000..6745d881
--- /dev/null
+++ b/lightning-kmp-app
@@ -0,0 +1 @@
+Subproject commit 6745d881d858b50f2e7108e59323c7e18a14dbcc
diff --git a/secp256k1-frost-kmp b/secp256k1-frost-kmp
new file mode 160000
index 00000000..24784037
--- /dev/null
+++ b/secp256k1-frost-kmp
@@ -0,0 +1 @@
+Subproject commit 2478403785b4315f5c6600d5e2712e40a2dea88d
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 96532c1c..660ac417 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -25,11 +25,6 @@ dependencyResolutionManagement {
             }
         }
         mavenCentral()
-        maven("https://jitpack.io") {
-            mavenContent {
-                includeGroupAndSubgroups("com.github.kngako")
-            }
-        }
     }
 }
 
@@ -37,4 +32,14 @@ plugins {
     id("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
 }
 
-include(":composeApp")
\ No newline at end of file
+include(":composeApp")
+
+// Composite builds: substitute the external module coordinates with the submodules' :library projects.
+includeBuild("secp256k1-frost-kmp")
+includeBuild("lightning-kmp-app") {
+    dependencySubstitution {
+        // the submodule's project stays named :library (compose-resources derives the Res package
+        // from it); only the coordinate consumers declare is renamed.
+        substitute(module("fr.acinq.phoenix:lightning-kmp-app")).using(project(":library"))
+    }
+}
\ No newline at end of file