diff --git a/firebase-sessions/firebase-sessions.gradle.kts b/firebase-sessions/firebase-sessions.gradle.kts
index 745bb0775f6..fba6304abed 100644
--- a/firebase-sessions/firebase-sessions.gradle.kts
+++ b/firebase-sessions/firebase-sessions.gradle.kts
@@ -60,6 +60,8 @@ android {
   }
 }
 
+kotlin { explicitApi() }
+
 tasks.withType(org.jetbrains.kotlin.gradle.tasks.KaptGenerateStubs::class.java).configureEach {
   kotlinOptions.jvmTarget = "1.8"
 }
diff --git a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/CrashEventReceiver.kt b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/CrashEventReceiver.kt
index 9318ed944e0..74a0d106d35 100644
--- a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/CrashEventReceiver.kt
+++ b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/CrashEventReceiver.kt
@@ -25,7 +25,7 @@ import com.google.firebase.sessions.SharedSessionRepository
  * This object provides a static-like entry point that Crashlytics calls to inform Sessions a fatal
  * crash has occurred.
  */
-object CrashEventReceiver {
+public object CrashEventReceiver {
   @VisibleForTesting internal lateinit var sharedSessionRepository: SharedSessionRepository
 
   /**
@@ -38,7 +38,7 @@ object CrashEventReceiver {
    * @see SharedSessionRepository.appBackground
    */
   @JvmStatic
-  fun notifyCrashOccurred() {
+  public fun notifyCrashOccurred() {
     try {
       if (!::sharedSessionRepository.isInitialized) {
         sharedSessionRepository = SharedSessionRepository.instance
diff --git a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/FirebaseSessionsDependencies.kt b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/FirebaseSessionsDependencies.kt
index adf3ce8c950..bb202529c04 100644
--- a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/FirebaseSessionsDependencies.kt
+++ b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/FirebaseSessionsDependencies.kt
@@ -30,7 +30,7 @@ import kotlinx.coroutines.sync.withLock
  *
  * This is important because the Sessions SDK starts up before dependent SDKs.
  */
-object FirebaseSessionsDependencies {
+public object FirebaseSessionsDependencies {
   private val dependencies = synchronizedMap(mutableMapOf<SessionSubscriber.Name, Dependency>())
 
   /**
@@ -38,7 +38,7 @@ object FirebaseSessionsDependencies {
    * the Sessions SDK will never generate a session.
    */
   @JvmStatic
-  fun addDependency(subscriberName: SessionSubscriber.Name) {
+  public fun addDependency(subscriberName: SessionSubscriber.Name) {
     if (dependencies.containsKey(subscriberName)) {
       Log.d(TAG, "Dependency $subscriberName already added.")
       return
@@ -54,7 +54,7 @@ object FirebaseSessionsDependencies {
    * return.
    */
   @JvmStatic
-  fun register(subscriber: SessionSubscriber) {
+  public fun register(subscriber: SessionSubscriber) {
     val subscriberName = subscriber.sessionSubscriberName
     val dependency = getDependency(subscriberName)
 
diff --git a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/SessionSubscriber.kt b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/SessionSubscriber.kt
index fdef981091f..d9a0bb762ce 100644
--- a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/SessionSubscriber.kt
+++ b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/api/SessionSubscriber.kt
@@ -19,20 +19,20 @@ package com.google.firebase.sessions.api
 import androidx.annotation.Discouraged
 
 /** [SessionSubscriber] is an interface that dependent SDKs must implement. */
-interface SessionSubscriber {
+public interface SessionSubscriber {
   /** [SessionSubscriber.Name]s are used for identifying subscribers. */
-  enum class Name {
+  public enum class Name {
     CRASHLYTICS,
     PERFORMANCE,
     @Discouraged(message = "This is for testing purposes only.") MATT_SAYS_HI,
   }
 
   /** [SessionDetails] contains session data passed to subscribers whenever the session changes */
-  data class SessionDetails(val sessionId: String)
+  public data class SessionDetails(val sessionId: String)
 
-  fun onSessionChanged(sessionDetails: SessionDetails)
+  public fun onSessionChanged(sessionDetails: SessionDetails)
 
-  val isDataCollectionEnabled: Boolean
+  public val isDataCollectionEnabled: Boolean
 
-  val sessionSubscriberName: Name
+  public val sessionSubscriberName: Name
 }