diff --git a/app/src/test/java/org/mozilla/fenix/components/toolbar/DefaultBrowserToolbarControllerTest.kt b/app/src/test/java/org/mozilla/fenix/components/toolbar/DefaultBrowserToolbarControllerTest.kt
index e252fc51f..344530f64 100644
--- a/app/src/test/java/org/mozilla/fenix/components/toolbar/DefaultBrowserToolbarControllerTest.kt
+++ b/app/src/test/java/org/mozilla/fenix/components/toolbar/DefaultBrowserToolbarControllerTest.kt
@@ -20,6 +20,7 @@ import io.mockk.verify
 import io.mockk.verifyOrder
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.ObsoleteCoroutinesApi
 import kotlinx.coroutines.newSingleThreadContext
 import kotlinx.coroutines.test.resetMain
 import kotlinx.coroutines.test.setMain
@@ -52,6 +53,7 @@ import org.mozilla.fenix.quickactionsheet.QuickActionSheetBehavior
 import org.mozilla.fenix.settings.deletebrowsingdata.deleteAndQuit
 
 @ExperimentalCoroutinesApi
+@UseExperimental(ObsoleteCoroutinesApi::class)
 class DefaultBrowserToolbarControllerTest {
 
     private val mainThreadSurrogate = newSingleThreadContext("UI thread")
diff --git a/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DefaultDeleteBrowsingDataControllerTest.kt b/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DefaultDeleteBrowsingDataControllerTest.kt
index 3fd8d3702..127c25d74 100644
--- a/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DefaultDeleteBrowsingDataControllerTest.kt
+++ b/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DefaultDeleteBrowsingDataControllerTest.kt
@@ -13,6 +13,7 @@ import io.mockk.mockk
 import io.mockk.verify
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.ObsoleteCoroutinesApi
 import kotlinx.coroutines.newSingleThreadContext
 import kotlinx.coroutines.test.resetMain
 import kotlinx.coroutines.test.runBlockingTest
@@ -28,6 +29,7 @@ import org.mozilla.fenix.ext.components
 import org.robolectric.annotation.Config
 
 @ExperimentalCoroutinesApi
+@UseExperimental(ObsoleteCoroutinesApi::class)
 @RunWith(AndroidJUnit4::class)
 @Config(application = TestApplication::class)
 class DefaultDeleteBrowsingDataControllerTest {
diff --git a/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DeleteAndQuitTest.kt b/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DeleteAndQuitTest.kt
index 0ec595679..680e85900 100644
--- a/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DeleteAndQuitTest.kt
+++ b/app/src/test/java/org/mozilla/fenix/settings/deletebrowsingdata/DeleteAndQuitTest.kt
@@ -12,6 +12,7 @@ import io.mockk.mockk
 import io.mockk.verify
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.ObsoleteCoroutinesApi
 import kotlinx.coroutines.newSingleThreadContext
 import kotlinx.coroutines.test.resetMain
 import kotlinx.coroutines.test.runBlockingTest
@@ -34,6 +35,7 @@ import org.mozilla.fenix.utils.Settings
 import org.robolectric.annotation.Config
 
 @ExperimentalCoroutinesApi
+@UseExperimental(ObsoleteCoroutinesApi::class)
 @RunWith(AndroidJUnit4::class)
 @Config(application = TestApplication::class)
 class DeleteAndQuitTest {