diff --git a/proguard.flags b/proguard.flags
index e918c62..8817b0b 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -20,6 +20,7 @@
 -keep class com.android.contacts.common.database.NoNullCursorAsyncQueryHandler { *; }
 -keep class com.android.contacts.common.database.SimContactDao { *; }
 -keep class com.android.contacts.common.database.SimContactDao$* { *; }
+-keep class com.android.contacts.common.database.SimContactDaoImpl { *; }
 -keep class com.android.contacts.common.format.FormatUtils { *; }
 -keep class com.android.contacts.common.format.TextHighlighter { *; }
 -keep class com.android.contacts.common.list.ContactListItemView { *; }
@@ -65,6 +66,8 @@
 -keep class com.android.contacts.common.model.RawContactDelta { *; }
 -keep class com.android.contacts.common.model.RawContactDeltaList { *; }
 -keep class com.android.contacts.common.model.RawContactModifier { *; }
+-keep class com.android.contacts.common.model.SimCard { *; }
+-keep class com.android.contacts.common.model.SimContact { *; }
 -keep class com.android.contacts.common.model.ValuesDelta { *; }
 -keep class com.android.contacts.common.MoreContactUtils { *; }
 -keep class com.android.contacts.common.preference.ContactsPreferences { *; }
@@ -82,6 +85,8 @@
 -keep class com.android.contacts.ContactsApplication { *; }
 -keep class com.android.contacts.ContactSaveService { *; }
 -keep class com.android.contacts.ContactSaveService$* { *; }
+-keep class com.android.contacts.SimImportService { *; }
+-keep class com.android.contacts.SimImportService$* { *; }
 -keep class com.android.contacts.DynamicShortcuts { *; }
 -keep class com.android.contacts.editor.ContactEditorUtils { *; }
 -keep class com.android.contacts.editor.EditorUiUtils { *; }
@@ -92,6 +97,8 @@
 -keep class com.android.contacts.interactions.ContactInteractionUtil { *; }
 -keep class com.android.contacts.util.SyncUtil { *; }
 -keep class com.android.contacts.widget.CompositeListAdapter { *; }
+-keep class com.google.common.base.Function { *; }
+-keep class com.google.common.base.Functions { *; }
 -keep class com.google.common.base.Objects { *; }
 -keep class com.google.common.base.Preconditions { *; }
 -keep class com.google.common.collect.ImmutableMap { *; }