diff --git a/asr-domain/build.gradle.kts b/asr-domain/build.gradle.kts
index 42796d94..fe712226 100644
--- a/asr-domain/build.gradle.kts
+++ b/asr-domain/build.gradle.kts
@@ -17,5 +17,8 @@ plugins {
 // kotlin-test in commonTest is added automatically (SkainetMultiplatformExtension's
 // kotlinTestInCommonTest default).
 skainet {
+    // sk.ainet.multiplatform 1.1.0 defaults the JVM target to 17; the engine artifacts and the rest of
+    // this build are JVM 21, and inlining across the two fails to compile.
+    jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_21
     namespace = "sk.ainet.asr.domain"
 }
diff --git a/llm-core/build.gradle.kts b/llm-core/build.gradle.kts
index 30b80e70..bce847c8 100644
--- a/llm-core/build.gradle.kts
+++ b/llm-core/build.gradle.kts
@@ -12,6 +12,9 @@ plugins {
 // declared manually below instead, alongside this module's own already-manual source-set
 // hierarchy (kotlin.mpp.applyDefaultHierarchyTemplate=false, also in gradle.properties).
 skainet {
+    // sk.ainet.multiplatform 1.1.0 defaults the JVM target to 17; the engine artifacts and the rest of
+    // this build are JVM 21, and inlining across the two fails to compile.
+    jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_21
     namespace = "sk.ainet.apps.llm"
     // sk.ainet.multiplatform defaults explicitApi to true; this module has a handful of
     // declarations (DecoderGgufWeightLoader.kt's GGUF key-naming helpers) missing visibility
diff --git a/transformer-core/build.gradle.kts b/transformer-core/build.gradle.kts
index c9820773..5d74edd9 100644
--- a/transformer-core/build.gradle.kts
+++ b/transformer-core/build.gradle.kts
@@ -15,6 +15,9 @@ plugins {
 // Targets: gradle.properties (skainet.targets=jvm,js,wasmJs,wasmWasi,apple,linux,androidNative --
 // the full default plus androidNative, since this module needs both androidNativeArm32/64).
 skainet {
+    // sk.ainet.multiplatform 1.1.0 defaults the JVM target to 17; the engine artifacts and the rest of
+    // this build are JVM 21, and inlining across the two fails to compile.
+    jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_21
     namespace = "sk.ainet.lang.nn"
 }