diff --git a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt
index a25fcde..0d3ddac 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthDataSourceImpl.kt
@@ -12,7 +12,9 @@ import retrofit2.HttpException
 import retrofit2.Response
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class AuthDataSourceImpl @Inject constructor(
     private val authServiceFactory: ServiceFactory<AuthService>,
     private val json: Json,
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthRepoImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthRepoImpl.kt
index 20f0867..d20a9e3 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthRepoImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthRepoImpl.kt
@@ -11,7 +11,9 @@ import kotlinx.coroutines.flow.map
 import okhttp3.HttpUrl.Companion.toHttpUrl
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class AuthRepoImpl @Inject constructor(
     private val dataSource: AuthDataSource,
     private val storage: AuthStorage,
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthStorageImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthStorageImpl.kt
index 9bfc7b8..5a81763 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthStorageImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/auth/impl/AuthStorageImpl.kt
@@ -9,10 +9,12 @@ import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
 private const val AUTH_HEADER_KEY = "AUTH_TOKEN"
 private const val BASE_URL_KEY = "BASE_URL"
 
+@Singleton
 class AuthStorageImpl @Inject constructor(
     private val sharedPreferences: SharedPreferences
 ) : AuthStorage {
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/disclaimer/DisclaimerStorageImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/disclaimer/DisclaimerStorageImpl.kt
index 823a977..41f8139 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/disclaimer/DisclaimerStorageImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/disclaimer/DisclaimerStorageImpl.kt
@@ -4,9 +4,11 @@ import android.content.SharedPreferences
 import gq.kirmanak.mealient.extensions.getBooleanOrFalse
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
 private const val IS_DISCLAIMER_ACCEPTED_KEY = "IS_DISCLAIMER_ACCEPTED"
 
+@Singleton
 class DisclaimerStorageImpl @Inject constructor(
     private val sharedPreferences: SharedPreferences
 ) : DisclaimerStorage {
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/network/RetrofitBuilder.kt b/app/src/main/java/gq/kirmanak/mealient/data/network/RetrofitBuilder.kt
index 0c5ae74..2f6cb3e 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/network/RetrofitBuilder.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/network/RetrofitBuilder.kt
@@ -8,7 +8,9 @@ import okhttp3.OkHttpClient
 import retrofit2.Retrofit
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class RetrofitBuilder @Inject constructor(
     private val okHttpClient: OkHttpClient,
     private val json: Json
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/recipes/db/RecipeStorageImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/recipes/db/RecipeStorageImpl.kt
index be0b13c..3039b99 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/recipes/db/RecipeStorageImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/recipes/db/RecipeStorageImpl.kt
@@ -13,7 +13,9 @@ import gq.kirmanak.mealient.extensions.toRecipeIngredientEntity
 import gq.kirmanak.mealient.extensions.toRecipeInstructionEntity
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class RecipeStorageImpl @Inject constructor(
     private val db: AppDb
 ) : RecipeStorage {
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeImageLoaderImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeImageLoaderImpl.kt
index 0f33b44..b83de42 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeImageLoaderImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeImageLoaderImpl.kt
@@ -9,7 +9,9 @@ import gq.kirmanak.mealient.ui.ImageLoader
 import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class RecipeImageLoaderImpl @Inject constructor(
     private val imageLoader: ImageLoader,
     private val authRepo: AuthRepo
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeRepoImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeRepoImpl.kt
index b8926f8..a36f7e1 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeRepoImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipeRepoImpl.kt
@@ -11,8 +11,10 @@ import gq.kirmanak.mealient.data.recipes.network.RecipeDataSource
 import kotlinx.coroutines.CancellationException
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
 @OptIn(ExperimentalPagingApi::class)
+@Singleton
 class RecipeRepoImpl @Inject constructor(
     private val mediator: RecipesRemoteMediator,
     private val storage: RecipeStorage,
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipesRemoteMediator.kt b/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipesRemoteMediator.kt
index 7c0b5c3..96cbfa4 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipesRemoteMediator.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/recipes/impl/RecipesRemoteMediator.kt
@@ -10,8 +10,10 @@ import gq.kirmanak.mealient.data.recipes.network.RecipeDataSource
 import kotlinx.coroutines.CancellationException
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
 @OptIn(ExperimentalPagingApi::class)
+@Singleton
 class RecipesRemoteMediator @Inject constructor(
     private val storage: RecipeStorage,
     private val network: RecipeDataSource,
diff --git a/app/src/main/java/gq/kirmanak/mealient/data/recipes/network/RecipeDataSourceImpl.kt b/app/src/main/java/gq/kirmanak/mealient/data/recipes/network/RecipeDataSourceImpl.kt
index 6a11cde..05cd801 100644
--- a/app/src/main/java/gq/kirmanak/mealient/data/recipes/network/RecipeDataSourceImpl.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/data/recipes/network/RecipeDataSourceImpl.kt
@@ -6,7 +6,9 @@ import gq.kirmanak.mealient.data.recipes.network.response.GetRecipeResponse
 import gq.kirmanak.mealient.data.recipes.network.response.GetRecipeSummaryResponse
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class RecipeDataSourceImpl @Inject constructor(
     private val authRepo: AuthRepo,
     private val recipeServiceFactory: ServiceFactory<RecipeService>,
diff --git a/app/src/main/java/gq/kirmanak/mealient/ui/picasso/ImageLoaderPicasso.kt b/app/src/main/java/gq/kirmanak/mealient/ui/picasso/ImageLoaderPicasso.kt
index 9b44c67..8779d4d 100644
--- a/app/src/main/java/gq/kirmanak/mealient/ui/picasso/ImageLoaderPicasso.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/ui/picasso/ImageLoaderPicasso.kt
@@ -5,7 +5,9 @@ import com.squareup.picasso.Picasso
 import gq.kirmanak.mealient.ui.ImageLoader
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class ImageLoaderPicasso @Inject constructor(
     private val picasso: Picasso
 ) : ImageLoader {
diff --git a/app/src/main/java/gq/kirmanak/mealient/ui/picasso/PicassoBuilder.kt b/app/src/main/java/gq/kirmanak/mealient/ui/picasso/PicassoBuilder.kt
index 4ccc879..31e885f 100644
--- a/app/src/main/java/gq/kirmanak/mealient/ui/picasso/PicassoBuilder.kt
+++ b/app/src/main/java/gq/kirmanak/mealient/ui/picasso/PicassoBuilder.kt
@@ -8,7 +8,9 @@ import gq.kirmanak.mealient.BuildConfig
 import okhttp3.OkHttpClient
 import timber.log.Timber
 import javax.inject.Inject
+import javax.inject.Singleton
 
+@Singleton
 class PicassoBuilder @Inject constructor(
     @ApplicationContext private val context: Context,
     private val okHttpClient: OkHttpClient