diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index c6de827..bd99a03 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -164,6 +164,7 @@ dependencies {
     implementation(libs.androidx.ui.tooling.preview)
     implementation(libs.androidx.material3)
     implementation(libs.androidx.material3.adaptive.navigation.suite)
+    implementation(libs.androidx.graphics.shapes)
     implementation(libs.androidx.compose.material.icons.core)
     implementation(libs.androidx.compose.material.icons.extended)
 
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 3526bbd..f0c4c3e 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -30,6 +30,10 @@ androidxTestRules = "1.7.0"
 # Room — Clockula's own storage (docs/PLAN.md §5). Schema is exported and
 # committed so migrations stay reviewable and testable.
 room = "2.8.3"
+# `MaterialShapes` lives in material3, but `Morph` and `RoundedPolygon` are
+# androidx.graphics.shapes — pulled in transitively today. M8 imports that
+# package directly, so it is declared at the version that already resolves.
+graphicsShapes = "1.0.1"
 
 [libraries]
 # AndroidX core
@@ -52,6 +56,8 @@ androidx-material3 = { group = "androidx.compose.material3", name = "material3",
 # M3 Expressive adaptive navigation: the short navigation bar on a phone,
 # the wide rail on a tablet, chosen by window size class rather than by hand.
 androidx-material3-adaptive-navigation-suite = { group = "androidx.compose.material3", name = "material3-adaptive-navigation-suite", version.ref = "material3" }
+# The polygon morph behind the world clock's analog face (M8 D8).
+androidx-graphics-shapes = { group = "androidx.graphics", name = "graphics-shapes", version.ref = "graphicsShapes" }
 androidx-compose-material-icons-core = { group = "androidx.compose.material", name = "material-icons-core" }
 androidx-compose-material-icons-extended = { group = "androidx.compose.material", name = "material-icons-extended" }