diff --git a/gradle.properties b/gradle.properties
index e6febb8a..8b67a1e2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -14,8 +14,8 @@ maven_group=de.florianmichael
 archives_base_name=viafabricplus
 
 # ViaVersion Libraries
-viaversion_version=4.9.0-1.20.3-pre4-SNAPSHOT
-viabackwards_version=4.9.0-1.20.3-pre3-SNAPSHOT
+viaversion_version=4.9.0-1.20.3-rc1-SNAPSHOT
+viabackwards_version=4.9.0-1.20.3-rc1-SNAPSHOT
 vialegacy_version=2.2.21-SNAPSHOT
 viaaprilfools_version=2.0.10-SNAPSHOT
 viabedrock_version=0.0.3-SNAPSHOT
diff --git a/src/main/java/de/florianmichael/viafabricplus/fixes/data/ResourcePackHeaderDiff.java b/src/main/java/de/florianmichael/viafabricplus/fixes/data/ResourcePackHeaderDiff.java
index 0e4ce007..225d8044 100644
--- a/src/main/java/de/florianmichael/viafabricplus/fixes/data/ResourcePackHeaderDiff.java
+++ b/src/main/java/de/florianmichael/viafabricplus/fixes/data/ResourcePackHeaderDiff.java
@@ -35,7 +35,7 @@ public class ResourcePackHeaderDiff {
     private final static Map<VersionEnum, GameVersion> GAME_VERSION_DIFF = new HashMap<>();
 
     static {
-        registerVersion(VersionEnum.r1_20_3, 22, "1.20.3-pre4");
+        registerVersion(VersionEnum.r1_20_3, 22, "1.20.3-rc1");
         registerVersion(VersionEnum.r1_20_2, 18, "1.20.2");
         registerVersion(VersionEnum.r1_20tor1_20_1, 15, "1.20.1"); // 1.20 and 1.20.1 are equal
         registerVersion(VersionEnum.r1_19_4, 13, "1.19.4");
diff --git a/src/main/java/de/florianmichael/viafabricplus/injection/mixin/viaversion/MixinProtocolVersion.java b/src/main/java/de/florianmichael/viafabricplus/injection/mixin/viaversion/MixinProtocolVersion.java
index a505dffb..fdeffd8c 100644
--- a/src/main/java/de/florianmichael/viafabricplus/injection/mixin/viaversion/MixinProtocolVersion.java
+++ b/src/main/java/de/florianmichael/viafabricplus/injection/mixin/viaversion/MixinProtocolVersion.java
@@ -54,7 +54,7 @@ public abstract class MixinProtocolVersion {
         viaFabricPlus$remaps.put("1.18/1.18.1", new Pair<>("1.18-1.18.1", null));
         viaFabricPlus$remaps.put("1.19.1/2", new Pair<>("1.19.1-1.19.2", null));
         viaFabricPlus$remaps.put("1.20/1.20.1", new Pair<>("1.20-1.20.1", null));
-        viaFabricPlus$remaps.put("1.20.3", new Pair<>("1.20.3-pre4", null));
+        viaFabricPlus$remaps.put("1.20.3", new Pair<>("1.20.3-rc1", null));
     }
 
     @Redirect(method = "<clinit>", at = @At(value = "INVOKE", target = "Lcom/viaversion/viaversion/api/protocol/version/ProtocolVersion;register(ILjava/lang/String;)Lcom/viaversion/viaversion/api/protocol/version/ProtocolVersion;"))