diff --git a/gradle.properties b/gradle.properties
index 9a51059..c968281 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,9 +1,9 @@
-version=2.1+1.21.9-pre1
+version=2.1+1.21.9-rc1
 group=com.lukasabbe.bookshelfinspector
 java_version=21
 
 # Common
-minecraft_version=1.21.9-pre4
+minecraft_version=1.21.9-rc1
 mod_name=BookshelfInspector
 mod_author=Lukasabbe
 mod_id=bookshelfinspector
@@ -13,13 +13,13 @@ description=Inspect any book in a chiseled bookshelf.
 minecraft_version_range=[1.21.8, 1.22)
 
 # https://projects.neoforged.net/neoforged/neoform
-neo_form_version=1.21.9-pre4-20250923.154059
+neo_form_version=1.21.9-rc1-20250925.142447
 # The version of ParchmentMC that is used, see https://parchmentmc.org/docs/getting-started#choose-a-version for new versions
 parchment_minecraft=1.21.8
 parchment_version=2025.07.20
 
 # Fabric
-fabric_version=0.133.11+1.21.9
+fabric_version=0.133.12+1.21.9
 fabric_loader_version=0.17.2
 
 # NeoForge