diff --git a/build.gradle.kts b/build.gradle.kts
index 9feb6be..cea9ebe 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,7 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 group = "dev.fyloz.colorrecipesexplorer"
-version = "6.0"
+version = "6.1"
 
 plugins {
     kotlin("jvm") version "1.6.20"
diff --git a/src/main/resources/changelogs/changelog.6.xml b/src/main/resources/changelogs/changelog.6.xml
index ed4dc12..6362a71 100644
--- a/src/main/resources/changelogs/changelog.6.xml
+++ b/src/main/resources/changelogs/changelog.6.xml
@@ -27,6 +27,16 @@
     </changeSet>
 
     <changeSet id="4" author="william">
+        <sql>
+            UPDATE mix_type mt
+            LEFT JOIN material m ON m.id = mt.material_id
+            LEFT JOIN material_type mmt ON mmt.id = m.material_type_id
+            SET mt.material_type_id = mmt.id
+        </sql>
+    </changeSet>
+
+    <changeSet id="5" author="william">
         <dropNotNullConstraint tableName="mix_type" columnName="material_id" columnDataType="bigint"/>
+        <addNotNullConstraint tableName="mix_type" columnName="material_type_id" columnDataType="bigint" />
     </changeSet>
 </databaseChangeLog>
\ No newline at end of file