diff --git a/build.gradle.kts b/build.gradle.kts
index 49c844e..663e94e 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -51,7 +51,7 @@ subprojects {
     apply(plugin = "org.jetbrains.kotlin.plugin.serialization")
     extensions.configure<LoomGradleExtension>("loom") {
         mappingsDep = layered {
-            officialMojangMappings().parchment("org.parchmentmc.data:parchment-1.19.3:2023.03.12")
+            officialMojangMappings().parchment("org.parchmentmc.data:parchment-1.20.1:2023.06.26")
         }
         silentMojangMappingsLicense()
         val refmap = "snowygui-${project.name}-refmap.json"