diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f0b9bde6..5442ba34 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -21,7 +21,7 @@ jdk = "22"
 jvmTarget = "11"
 kotlin = "2.1.0"
 kotlinCompileTesting = "0.7.0"
-kotlinpoet = "1.18.1"
+kotlinpoet = "2.0.0"
 ksp = "2.1.0-1.0.29"
 ktfmt = "0.53"
 moshi = "1.15.1"
diff --git a/moshi-sealed/codegen/src/test/kotlin/dev/zacsweers/moshix/sealed/codegen/ksp/MoshiSealedSymbolProcessorTest.kt b/moshi-sealed/codegen/src/test/kotlin/dev/zacsweers/moshix/sealed/codegen/ksp/MoshiSealedSymbolProcessorTest.kt
index f9e77b40..22a12b51 100644
--- a/moshi-sealed/codegen/src/test/kotlin/dev/zacsweers/moshix/sealed/codegen/ksp/MoshiSealedSymbolProcessorTest.kt
+++ b/moshi-sealed/codegen/src/test/kotlin/dev/zacsweers/moshix/sealed/codegen/ksp/MoshiSealedSymbolProcessorTest.kt
@@ -76,39 +76,37 @@ class MoshiSealedSymbolProcessorProviderTest(private val useKSP2: Boolean) {
     assertThat(generatedAdapter.readText().trim())
       .isEqualTo(
         """
-      // Code generated by moshi-sealed. Do not edit.
-      package test
+        // Code generated by moshi-sealed. Do not edit.
+        package test
 
-      import com.squareup.moshi.JsonAdapter
-      import com.squareup.moshi.JsonReader
-      import com.squareup.moshi.JsonWriter
-      import com.squareup.moshi.Moshi
-      import com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory
-      import kotlin.Suppress
-      import kotlin.collections.emptySet
-
-      @Suppress("DEPRECATION", "unused", "ClassName", "REDUNDANT_PROJECTION", "RedundantExplicitType",
-          "LocalVariableName", "RedundantVisibilityModifier")
-      public class BaseTypeJsonAdapter(
-        moshi: Moshi,
-      ) : JsonAdapter<BaseType>() {
-        @Suppress("UNCHECKED_CAST")
-        private val runtimeAdapter: JsonAdapter<BaseType> =
-            PolymorphicJsonAdapterFactory.of(BaseType::class.java, "type")
-              .withSubtype(BaseType.TypeA::class.java, "a")
-              .withSubtype(BaseType.TypeA::class.java, "aa")
-              .withSubtype(BaseType.TypeB::class.java, "b")
-              .withSubtype(BaseType.TypeC.TypeCImpl::class.java, "c")
-              .create(BaseType::class.java, emptySet(), moshi) as JsonAdapter<BaseType>
-
-        override fun fromJson(reader: JsonReader): BaseType? = runtimeAdapter.fromJson(reader)
-
-        override fun toJson(writer: JsonWriter, value_: BaseType?) {
-          runtimeAdapter.toJson(writer, value_)
+        import com.squareup.moshi.JsonAdapter
+        import com.squareup.moshi.JsonReader
+        import com.squareup.moshi.JsonWriter
+        import com.squareup.moshi.Moshi
+        import com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory
+        import kotlin.Suppress
+        import kotlin.collections.emptySet
+
+        @Suppress("DEPRECATION", "unused", "ClassName", "REDUNDANT_PROJECTION", "RedundantExplicitType", "LocalVariableName", "RedundantVisibilityModifier")
+        public class BaseTypeJsonAdapter(
+          moshi: Moshi,
+        ) : JsonAdapter<BaseType>() {
+          @Suppress("UNCHECKED_CAST")
+          private val runtimeAdapter: JsonAdapter<BaseType> =
+              PolymorphicJsonAdapterFactory.of(BaseType::class.java, "type")
+                .withSubtype(BaseType.TypeA::class.java, "a")
+                .withSubtype(BaseType.TypeA::class.java, "aa")
+                .withSubtype(BaseType.TypeB::class.java, "b")
+                .withSubtype(BaseType.TypeC.TypeCImpl::class.java, "c")
+                .create(BaseType::class.java, emptySet(), moshi) as JsonAdapter<BaseType>
+
+          override fun fromJson(reader: JsonReader): BaseType? = runtimeAdapter.fromJson(reader)
+
+          override fun toJson(writer: JsonWriter, value_: BaseType?) {
+            runtimeAdapter.toJson(writer, value_)
+          }
         }
-      }
-      """
-          .trimIndent()
+        """.trimIndent()
       )
   }
 
@@ -398,48 +396,46 @@ class MoshiSealedSymbolProcessorProviderTest(private val useKSP2: Boolean) {
     assertThat(generatedFile.readText().trim())
       .isEqualTo(
         """
-      // Code generated by moshi-sealed. Do not edit.
-      package test
-
-      import com.squareup.moshi.JsonAdapter
-      import com.squareup.moshi.JsonReader
-      import com.squareup.moshi.JsonWriter
-      import com.squareup.moshi.Moshi
-      import com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory
-      import dev.zacsweers.moshix.`sealed`.runtime.`internal`.ObjectJsonAdapter
-      import kotlin.ExperimentalStdlibApi
-      import kotlin.OptIn
-      import kotlin.Suppress
-      import kotlin.collections.emptySet
-
-      @Suppress("DEPRECATION", "unused", "ClassName", "REDUNDANT_PROJECTION", "RedundantExplicitType",
-          "LocalVariableName", "RedundantVisibilityModifier")
-      public class BaseTypeJsonAdapter(
-        moshi: Moshi,
-      ) : JsonAdapter<BaseType>() {
-        private val runtimeAdapter: JsonAdapter<BaseType>
-
-        init {
-          val moshi_ = moshi.newBuilder()
-                  .add(BaseType.TypeA::class.java, ObjectJsonAdapter(BaseType.TypeA))
-              .add(BaseType.TypeB::class.java, ObjectJsonAdapter(BaseType.TypeB))
-              .build()
-          @Suppress("UNCHECKED_CAST")
-          @OptIn(ExperimentalStdlibApi::class)
-          runtimeAdapter = PolymorphicJsonAdapterFactory.of(BaseType::class.java, "type")
-                .withSubtype(BaseType.TypeA::class.java, "a")
-                .withSubtype(BaseType.TypeB::class.java, "b")
-                .create(BaseType::class.java, emptySet(), moshi_) as JsonAdapter<BaseType>
-        }
-
-        override fun fromJson(reader: JsonReader): BaseType? = runtimeAdapter.fromJson(reader)
+        // Code generated by moshi-sealed. Do not edit.
+        package test
 
-        override fun toJson(writer: JsonWriter, value_: BaseType?) {
-          runtimeAdapter.toJson(writer, value_)
+        import com.squareup.moshi.JsonAdapter
+        import com.squareup.moshi.JsonReader
+        import com.squareup.moshi.JsonWriter
+        import com.squareup.moshi.Moshi
+        import com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory
+        import dev.zacsweers.moshix.`sealed`.runtime.`internal`.ObjectJsonAdapter
+        import kotlin.ExperimentalStdlibApi
+        import kotlin.OptIn
+        import kotlin.Suppress
+        import kotlin.collections.emptySet
+
+        @Suppress("DEPRECATION", "unused", "ClassName", "REDUNDANT_PROJECTION", "RedundantExplicitType", "LocalVariableName", "RedundantVisibilityModifier")
+        public class BaseTypeJsonAdapter(
+          moshi: Moshi,
+        ) : JsonAdapter<BaseType>() {
+          private val runtimeAdapter: JsonAdapter<BaseType>
+
+          init {
+            val moshi_ = moshi.newBuilder()
+                    .add(BaseType.TypeA::class.java, ObjectJsonAdapter(BaseType.TypeA))
+                .add(BaseType.TypeB::class.java, ObjectJsonAdapter(BaseType.TypeB))
+                .build()
+            @Suppress("UNCHECKED_CAST")
+            @OptIn(ExperimentalStdlibApi::class)
+            runtimeAdapter = PolymorphicJsonAdapterFactory.of(BaseType::class.java, "type")
+                  .withSubtype(BaseType.TypeA::class.java, "a")
+                  .withSubtype(BaseType.TypeB::class.java, "b")
+                  .create(BaseType::class.java, emptySet(), moshi_) as JsonAdapter<BaseType>
+          }
+
+          override fun fromJson(reader: JsonReader): BaseType? = runtimeAdapter.fromJson(reader)
+
+          override fun toJson(writer: JsonWriter, value_: BaseType?) {
+            runtimeAdapter.toJson(writer, value_)
+          }
         }
-      }
-      """
-          .trimIndent()
+        """.trimIndent()
       )
   }
 
@@ -484,36 +480,34 @@ class MoshiSealedSymbolProcessorProviderTest(private val useKSP2: Boolean) {
     assertThat(generatedAdapter.readText().trim())
       .isEqualTo(
         """
-      // Code generated by moshi-sealed. Do not edit.
-      package test
+        // Code generated by moshi-sealed. Do not edit.
+        package test
 
-      import com.squareup.moshi.JsonAdapter
-      import com.squareup.moshi.JsonReader
-      import com.squareup.moshi.JsonWriter
-      import com.squareup.moshi.Moshi
-      import com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory
-      import kotlin.Suppress
-      import kotlin.collections.emptySet
-
-      @Suppress("DEPRECATION", "unused", "ClassName", "REDUNDANT_PROJECTION", "RedundantExplicitType",
-          "LocalVariableName", "RedundantVisibilityModifier")
-      public class BaseTypeJsonAdapter(
-        moshi: Moshi,
-      ) : JsonAdapter<BaseType>() {
-        @Suppress("UNCHECKED_CAST")
-        private val runtimeAdapter: JsonAdapter<BaseType> =
-            PolymorphicJsonAdapterFactory.of(BaseType::class.java, "type")
-              .withSubtype(SubType::class.java, "a")
-              .create(BaseType::class.java, emptySet(), moshi) as JsonAdapter<BaseType>
-
-        override fun fromJson(reader: JsonReader): BaseType? = runtimeAdapter.fromJson(reader)
-
-        override fun toJson(writer: JsonWriter, value_: BaseType?) {
-          runtimeAdapter.toJson(writer, value_)
+        import com.squareup.moshi.JsonAdapter
+        import com.squareup.moshi.JsonReader
+        import com.squareup.moshi.JsonWriter
+        import com.squareup.moshi.Moshi
+        import com.squareup.moshi.adapters.PolymorphicJsonAdapterFactory
+        import kotlin.Suppress
+        import kotlin.collections.emptySet
+
+        @Suppress("DEPRECATION", "unused", "ClassName", "REDUNDANT_PROJECTION", "RedundantExplicitType", "LocalVariableName", "RedundantVisibilityModifier")
+        public class BaseTypeJsonAdapter(
+          moshi: Moshi,
+        ) : JsonAdapter<BaseType>() {
+          @Suppress("UNCHECKED_CAST")
+          private val runtimeAdapter: JsonAdapter<BaseType> =
+              PolymorphicJsonAdapterFactory.of(BaseType::class.java, "type")
+                .withSubtype(SubType::class.java, "a")
+                .create(BaseType::class.java, emptySet(), moshi) as JsonAdapter<BaseType>
+
+          override fun fromJson(reader: JsonReader): BaseType? = runtimeAdapter.fromJson(reader)
+
+          override fun toJson(writer: JsonWriter, value_: BaseType?) {
+            runtimeAdapter.toJson(writer, value_)
+          }
         }
-      }
-      """
-          .trimIndent()
+        """.trimIndent()
       )
   }