diff --git a/mentions/build.gradle.kts b/mentions/build.gradle.kts
index 699d34fe..32f66396 100644
--- a/mentions/build.gradle.kts
+++ b/mentions/build.gradle.kts
@@ -54,6 +54,17 @@ kotlin {
     explicitApi()
 }
 
+/**
+ * Kotlin code compilation task waits until
+ * Protobuf files are fully generated and rejections are created.
+ */
+// TODO:2024-05-20:mykyta.pimonov: Rewrite the way of organizing tasks,
+//  using task inputs and outputs.
+//  See: https://github.com/spine-examples/Pingh/pull/7#discussion_r1607043747.
+tasks.named("compileKotlin") {
+    dependsOn("generateRejections")
+}
+
 dependencies {
     implementation(project(":github"))
     implementation(project(":sessions"))
diff --git a/sessions/src/main/kotlin/io/spine/examples/pingh/sessions/SessionsContext.kt b/sessions/src/main/kotlin/io/spine/examples/pingh/sessions/SessionsContext.kt
index 00a07c08..b3e73437 100644
--- a/sessions/src/main/kotlin/io/spine/examples/pingh/sessions/SessionsContext.kt
+++ b/sessions/src/main/kotlin/io/spine/examples/pingh/sessions/SessionsContext.kt
@@ -39,4 +39,4 @@ public const val NAME: String = "Sessions"
  */
 public fun newBuilder(): BoundedContextBuilder =
     BoundedContext.singleTenant(NAME)
-        .add(UserSessionRepository())
+        .add(UserSessionProcess::class.java)
diff --git a/sessions/src/main/kotlin/io/spine/examples/pingh/sessions/UserSessionRepository.kt b/sessions/src/main/kotlin/io/spine/examples/pingh/sessions/UserSessionRepository.kt
deleted file mode 100644
index c4b6197d..00000000
--- a/sessions/src/main/kotlin/io/spine/examples/pingh/sessions/UserSessionRepository.kt
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright 2024, TeamDev. All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Redistribution and use in source and/or binary forms, with or without
- * modification, must retain the above copyright notice and the following
- * disclaimer.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-package io.spine.examples.pingh.sessions
-
-import com.google.errorprone.annotations.OverridingMethodsMustInvokeSuper
-import io.spine.examples.pingh.sessions.event.UserLoggedIn
-import io.spine.examples.pingh.sessions.event.UserLoggedOut
-import io.spine.server.procman.ProcessManagerRepository
-import io.spine.server.route.EventRoute.withId
-import io.spine.server.route.EventRouting
-
-/**
- * Manages instances of [UserSessionProcess].
- */
-public class UserSessionRepository :
-    ProcessManagerRepository<SessionId, UserSessionProcess, UserSession>() {
-
-    @OverridingMethodsMustInvokeSuper
-    override fun setupEventRouting(routing: EventRouting<SessionId>) {
-        super.setupEventRouting(routing)
-        routing
-            .route(UserLoggedIn::class.java) { event, _ ->
-                withId(event.id)
-            }
-            .route(UserLoggedOut::class.java) { event, _ ->
-                withId(event.id)
-            }
-    }
-}