diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionQuery.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionQuery.kt
index 1daf8cf8d..ac41cecf7 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionQuery.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionQuery.kt
@@ -41,9 +41,9 @@ import suwayomi.tachidesk.graphql.server.primitives.applyBeforeAfter
 import suwayomi.tachidesk.graphql.server.primitives.greaterNotUnique
 import suwayomi.tachidesk.graphql.server.primitives.lessNotUnique
 import suwayomi.tachidesk.graphql.server.primitives.maybeSwap
-import suwayomi.tachidesk.graphql.types.ContentRating
 import suwayomi.tachidesk.graphql.types.ExtensionNodeList
 import suwayomi.tachidesk.graphql.types.ExtensionType
+import suwayomi.tachidesk.manga.model.dataclass.ContentRating
 import suwayomi.tachidesk.manga.model.table.ExtensionTable
 import java.util.concurrent.CompletableFuture
 
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionStoreQuery.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionStoreQuery.kt
index ed6ecec9f..3e8468ec0 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionStoreQuery.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/ExtensionStoreQuery.kt
@@ -7,7 +7,6 @@ package suwayomi.tachidesk.graphql.queries
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-import com.expediagroup.graphql.generator.annotations.GraphQLDeprecated
 import com.expediagroup.graphql.server.extensions.getValueFromDataLoader
 import graphql.schema.DataFetchingEnvironment
 import org.jetbrains.exposed.v1.core.Column
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/SourceQuery.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/SourceQuery.kt
index 49bb60891..be4db4bb4 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/SourceQuery.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/SourceQuery.kt
@@ -40,9 +40,9 @@ import suwayomi.tachidesk.graphql.server.primitives.applyBeforeAfter
 import suwayomi.tachidesk.graphql.server.primitives.greaterNotUnique
 import suwayomi.tachidesk.graphql.server.primitives.lessNotUnique
 import suwayomi.tachidesk.graphql.server.primitives.maybeSwap
-import suwayomi.tachidesk.graphql.types.ContentRating
 import suwayomi.tachidesk.graphql.types.SourceNodeList
 import suwayomi.tachidesk.graphql.types.SourceType
+import suwayomi.tachidesk.manga.model.dataclass.ContentRating
 import suwayomi.tachidesk.manga.model.table.SourceTable
 import java.util.concurrent.CompletableFuture
 
@@ -112,7 +112,7 @@ class SourceQuery {
                         ContentRating.PORNOGRAPHIC.ordinal
                 }
             }
-            opAnd.andWhere(contentRating) { SourceTable.contentRating eq it.getValue() }
+            opAnd.andWhere(contentRating) { SourceTable.contentRating eq it.ordinal }
 
             return opAnd.op
         }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/filter/Filter.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/filter/Filter.kt
index ef178000c..ac8fd5cc3 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/filter/Filter.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/queries/filter/Filter.kt
@@ -28,7 +28,7 @@ import org.jetbrains.exposed.v1.core.upperCase
 import org.jetbrains.exposed.v1.core.wrap
 import org.jetbrains.exposed.v1.jdbc.Query
 import org.jetbrains.exposed.v1.jdbc.andWhere
-import suwayomi.tachidesk.graphql.types.ContentRating
+import suwayomi.tachidesk.manga.model.dataclass.ContentRating
 
 class ILikeEscapeOp(
     expr1: Expression<*>,
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/ExtensionType.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/ExtensionType.kt
index e2bc3ee1a..746375fe6 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/ExtensionType.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/ExtensionType.kt
@@ -18,6 +18,7 @@ import suwayomi.tachidesk.graphql.server.primitives.Node
 import suwayomi.tachidesk.graphql.server.primitives.NodeList
 import suwayomi.tachidesk.graphql.server.primitives.PageInfo
 import suwayomi.tachidesk.manga.impl.extension.Extension
+import suwayomi.tachidesk.manga.model.dataclass.ContentRating
 import suwayomi.tachidesk.manga.model.table.ExtensionTable
 import java.util.concurrent.CompletableFuture
 
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/SourceType.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/SourceType.kt
index a815a62ee..acd9f4e13 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/SourceType.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/SourceType.kt
@@ -8,7 +8,6 @@
 package suwayomi.tachidesk.graphql.types
 
 import com.expediagroup.graphql.generator.annotations.GraphQLDeprecated
-import com.expediagroup.graphql.generator.annotations.GraphQLIgnore
 import com.expediagroup.graphql.server.extensions.getValueFromDataLoader
 import eu.kanade.tachiyomi.source.CatalogueSource
 import eu.kanade.tachiyomi.source.ConfigurableSource
@@ -27,6 +26,7 @@ import suwayomi.tachidesk.manga.impl.Source.getSourcePreferencesRaw
 import suwayomi.tachidesk.manga.impl.extension.Extension
 import suwayomi.tachidesk.manga.impl.util.source.GetCatalogueSource
 import suwayomi.tachidesk.manga.impl.util.source.GetCatalogueSource.getCatalogueSourceOrStub
+import suwayomi.tachidesk.manga.model.dataclass.ContentRating
 import suwayomi.tachidesk.manga.model.table.ExtensionTable
 import suwayomi.tachidesk.manga.model.table.SourceTable
 import java.util.concurrent.CompletableFuture
@@ -507,33 +507,3 @@ fun preferenceOf(preference: SourcePreference): Preference =
             throw RuntimeException("sealed class cannot have more subtypes!")
         }
     }
-
-enum class ContentRating {
-    SAFE,
-    SUGGESTIVE,
-    EROTICA,
-    PORNOGRAPHIC,
-    ;
-
-    @GraphQLIgnore
-    fun getValue() =
-        when (this) {
-            SAFE -> 0
-            SUGGESTIVE -> 1
-            EROTICA -> 2
-            PORNOGRAPHIC -> 3
-        }
-
-    @GraphQLIgnore
-    companion object {
-        @GraphQLIgnore
-        fun valueOf(contentRating: Int) =
-            when (contentRating) {
-                0 -> SAFE
-                1 -> SUGGESTIVE
-                2 -> EROTICA
-                3 -> PORNOGRAPHIC
-                else -> SAFE
-            }
-    }
-}
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt
index b9cf77465..7dd0fd7a7 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt
@@ -28,7 +28,6 @@ import org.jetbrains.exposed.v1.jdbc.select
 import org.jetbrains.exposed.v1.jdbc.selectAll
 import org.jetbrains.exposed.v1.jdbc.transactions.transaction
 import org.jetbrains.exposed.v1.jdbc.update
-import suwayomi.tachidesk.graphql.types.ContentRating
 import suwayomi.tachidesk.manga.impl.util.PackageTools
 import suwayomi.tachidesk.manga.impl.util.PackageTools.EXTENSION_FEATURE
 import suwayomi.tachidesk.manga.impl.util.PackageTools.LIB_VERSION_MAX
@@ -43,6 +42,7 @@ import suwayomi.tachidesk.manga.impl.util.source.GetCatalogueSource
 import suwayomi.tachidesk.manga.impl.util.storage.ImageResponse.clearCachedImage
 import suwayomi.tachidesk.manga.impl.util.storage.ImageResponse.getImageResponse
 import suwayomi.tachidesk.manga.impl.util.storage.ImageResponse.saveImage
+import suwayomi.tachidesk.manga.model.dataclass.ContentRating
 import suwayomi.tachidesk.manga.model.table.ExtensionTable
 import suwayomi.tachidesk.manga.model.table.SourceTable
 import suwayomi.tachidesk.server.ApplicationDirs
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/ExtensionInfo.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/ExtensionInfo.kt
index ac09e2cac..ead7d44ef 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/ExtensionInfo.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/ExtensionInfo.kt
@@ -35,4 +35,9 @@ enum class ContentRating {
     SUGGESTIVE,
     EROTICA,
     PORNOGRAPHIC,
+    ;
+
+    companion object {
+        fun valueOf(contentRating: Int) = entries.find { it.ordinal == contentRating } ?: SAFE
+    }
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/server/database/migration/M0057_AddNewExtensionApiFields.kt b/server/src/main/kotlin/suwayomi/tachidesk/server/database/migration/M0057_AddNewExtensionApiFields.kt
index 97d078d9f..4b50bf38e 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/server/database/migration/M0057_AddNewExtensionApiFields.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/server/database/migration/M0057_AddNewExtensionApiFields.kt
@@ -8,8 +8,8 @@ package suwayomi.tachidesk.server.database.migration
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 import de.neonew.exposed.migrations.helpers.SQLMigration
-import suwayomi.tachidesk.graphql.types.ContentRating
 import suwayomi.tachidesk.graphql.types.DatabaseType
+import suwayomi.tachidesk.manga.model.dataclass.ContentRating
 import suwayomi.tachidesk.server.database.migration.helpers.MAYBE_TYPE_PREFIX
 import suwayomi.tachidesk.server.database.migration.helpers.UNLIMITED_TEXT
 import suwayomi.tachidesk.server.database.migration.helpers.toSqlName