diff --git a/Signal/src/util/Backup/OWSBackupImportJob.m b/Signal/src/util/Backup/OWSBackupImportJob.m
index 9f602fff9..7ae956932 100644
--- a/Signal/src/util/Backup/OWSBackupImportJob.m
+++ b/Signal/src/util/Backup/OWSBackupImportJob.m
@@ -488,10 +488,9 @@ NSString *const kOWSBackup_ImportDatabaseKeySpec = @"kOWSBackup_ImportDatabaseKe
     // restoration of backup contents.  If some of migrations don't
     // complete, they'll be run the next time the app launches.
     dispatch_async(dispatch_get_main_queue(), ^{
-        [[[OWSDatabaseMigrationRunner alloc] initWithPrimaryStorage:self.primaryStorage]
-            runAllOutstandingWithCompletion:^{
-                completion(YES);
-            }];
+        [[[OWSDatabaseMigrationRunner alloc] init] runAllOutstandingWithCompletion:^{
+            completion(YES);
+        }];
     });
 }
 
diff --git a/SignalMessaging/environment/VersionMigrations.m b/SignalMessaging/environment/VersionMigrations.m
index acecb8177..6743f92f9 100644
--- a/SignalMessaging/environment/VersionMigrations.m
+++ b/SignalMessaging/environment/VersionMigrations.m
@@ -57,8 +57,7 @@ NS_ASSUME_NONNULL_BEGIN
 
     if (!previousVersion) {
         OWSLogInfo(@"No previous version found. Probably first launch since install - nothing to migrate.");
-        OWSDatabaseMigrationRunner *runner =
-            [[OWSDatabaseMigrationRunner alloc] initWithPrimaryStorage:[OWSPrimaryStorage sharedManager]];
+        OWSDatabaseMigrationRunner *runner = [[OWSDatabaseMigrationRunner alloc] init];
         [runner assumeAllExistingMigrationsRun];
         dispatch_async(dispatch_get_main_queue(), ^{
             completion();
@@ -95,8 +94,7 @@ NS_ASSUME_NONNULL_BEGIN
     }
 
     dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        [[[OWSDatabaseMigrationRunner alloc] initWithPrimaryStorage:[OWSPrimaryStorage sharedManager]]
-            runAllOutstandingWithCompletion:completion];
+        [[[OWSDatabaseMigrationRunner alloc] init] runAllOutstandingWithCompletion:completion];
     });
 }
 
diff --git a/SignalMessaging/environment/migrations/OWSDatabaseMigration.h b/SignalMessaging/environment/migrations/OWSDatabaseMigration.h
index b0be290b1..487991ab7 100644
--- a/SignalMessaging/environment/migrations/OWSDatabaseMigration.h
+++ b/SignalMessaging/environment/migrations/OWSDatabaseMigration.h
@@ -12,8 +12,6 @@ typedef void (^OWSDatabaseMigrationCompletion)(void);
 
 @interface OWSDatabaseMigration : TSYapDatabaseObject
 
-- (instancetype)initWithPrimaryStorage:(OWSPrimaryStorage *)primaryStorage;
-
 @property (nonatomic, readonly) OWSPrimaryStorage *primaryStorage;
 
 // Prefer nonblocking (async) migrations by overriding `runUpWithTransaction:` in a subclass.
diff --git a/SignalMessaging/environment/migrations/OWSDatabaseMigration.m b/SignalMessaging/environment/migrations/OWSDatabaseMigration.m
index 75fc94aed..2f23a47f9 100644
--- a/SignalMessaging/environment/migrations/OWSDatabaseMigration.m
+++ b/SignalMessaging/environment/migrations/OWSDatabaseMigration.m
@@ -10,6 +10,17 @@ NS_ASSUME_NONNULL_BEGIN
 
 @implementation OWSDatabaseMigration
 
+#pragma mark - Dependencies
+
+- (OWSPrimaryStorage *)primaryStorage
+{
+    OWSAssertDebug(SSKEnvironment.shared.primaryStorage);
+
+    return SSKEnvironment.shared.primaryStorage;
+}
+
+#pragma mark -
+
 - (void)saveWithTransaction:(YapDatabaseReadWriteTransaction *)transaction
 {
     OWSLogInfo(@"marking migration as complete.");
@@ -17,15 +28,13 @@ NS_ASSUME_NONNULL_BEGIN
     [super saveWithTransaction:transaction];
 }
 
-- (instancetype)initWithPrimaryStorage:(OWSPrimaryStorage *)primaryStorage
+- (instancetype)init
 {
     self = [super initWithUniqueId:[self.class migrationId]];
     if (!self) {
         return self;
     }
 
-    _primaryStorage = primaryStorage;
-
     return self;
 }
 
diff --git a/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.h b/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.h
index bdaa25bfd..82e658a1f 100644
--- a/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.h
+++ b/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.h
@@ -6,14 +6,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 typedef void (^OWSDatabaseMigrationCompletion)(void);
 
-@class OWSPrimaryStorage;
-
 @interface OWSDatabaseMigrationRunner : NSObject
 
-- (instancetype)initWithPrimaryStorage:(OWSPrimaryStorage *)primaryStorage;
-
-@property (nonatomic, readonly) OWSPrimaryStorage *primaryStorage;
-
 /**
  * Run any outstanding version migrations.
  */
diff --git a/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.m b/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.m
index 4de648195..2b1f6c7e6 100644
--- a/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.m
+++ b/SignalMessaging/environment/migrations/OWSDatabaseMigrationRunner.m
@@ -19,35 +19,22 @@ NS_ASSUME_NONNULL_BEGIN
 
 @implementation OWSDatabaseMigrationRunner
 
-- (instancetype)initWithPrimaryStorage:(OWSPrimaryStorage *)primaryStorage
-{
-    self = [super init];
-    if (!self) {
-        return self;
-    }
-
-    _primaryStorage = primaryStorage;
-
-    return self;
-}
-
 // This should all migrations which do NOT qualify as safeBlockingMigrations:
 - (NSArray<OWSDatabaseMigration *> *)allMigrations
 {
-    OWSPrimaryStorage *primaryStorage = OWSPrimaryStorage.sharedManager;
     return @[
-        [[OWS100RemoveTSRecipientsMigration alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS102MoveLoggingPreferenceToUserDefaults alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS103EnableVideoCalling alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS104CreateRecipientIdentities alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS105AttachmentFilePaths alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS106EnsureProfileComplete alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS107LegacySounds alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS108CallLoggingPreference alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS109OutgoingMessageState alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS111UDAttributesMigration alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS112TypingIndicatorsMigration alloc] initWithPrimaryStorage:primaryStorage],
-        [[OWS113MultiAttachmentMediaMessages alloc] initWithPrimaryStorage:primaryStorage],
+        [[OWS100RemoveTSRecipientsMigration alloc] init],
+        [[OWS102MoveLoggingPreferenceToUserDefaults alloc] init],
+        [[OWS103EnableVideoCalling alloc] init],
+        [[OWS104CreateRecipientIdentities alloc] init],
+        [[OWS105AttachmentFilePaths alloc] init],
+        [[OWS106EnsureProfileComplete alloc] init],
+        [[OWS107LegacySounds alloc] init],
+        [[OWS108CallLoggingPreference alloc] init],
+        [[OWS109OutgoingMessageState alloc] init],
+        [[OWS111UDAttributesMigration alloc] init],
+        [[OWS112TypingIndicatorsMigration alloc] init],
+        [[OWS113MultiAttachmentMediaMessages alloc] init],
     ];
 }