diff --git a/adapters/bukkit/plugin/build.gradle b/adapters/bukkit/plugin/build.gradle
index f5033c170..ad15d0dc9 100644
--- a/adapters/bukkit/plugin/build.gradle
+++ b/adapters/bukkit/plugin/build.gradle
@@ -3,7 +3,7 @@ def mainClass = 'art.arcane.iris.Iris'
 def bootstrapperClass = 'art.arcane.iris.IrisBootstrap'
 
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186')
+    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
     .get()
 
 dependencies {
diff --git a/adapters/fabric/build.gradle b/adapters/fabric/build.gradle
index 470d91077..c989041c2 100644
--- a/adapters/fabric/build.gradle
+++ b/adapters/fabric/build.gradle
@@ -28,10 +28,10 @@ plugins {
 
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
-String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.0.0-26.2'))
+String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.0-26.2'))
 String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.2'))
 String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').getOrElse(rootProperties.getProperty('fabricLoaderVersion', '0.19.3'))
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186'))
+String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> irisArtifactName = { String platform, String targetVersion ->
     return "Iris v${project.version} [${platform}] ${targetVersion}.jar"
 }
diff --git a/adapters/forge/build.gradle b/adapters/forge/build.gradle
index a8d6c4baa..5dab53473 100644
--- a/adapters/forge/build.gradle
+++ b/adapters/forge/build.gradle
@@ -28,10 +28,10 @@ plugins {
 
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
-String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.0.0-26.2'))
+String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.0-26.2'))
 String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.2'))
 String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse(rootProperties.getProperty('forgeVersion', '26.2-65.1.1'))
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186'))
+String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> loaderDisplayVersion = { String loaderVersion ->
     String coordinatePrefix = "${minecraftVersion}-"
     if (loaderVersion.startsWith(coordinatePrefix)) {
diff --git a/adapters/neoforge/build.gradle b/adapters/neoforge/build.gradle
index 83bc6a8e7..c721e1c16 100644
--- a/adapters/neoforge/build.gradle
+++ b/adapters/neoforge/build.gradle
@@ -28,10 +28,10 @@ plugins {
 
 Properties rootProperties = new Properties()
 file('../../gradle.properties').withInputStream { InputStream stream -> rootProperties.load(stream) }
-String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.0.0-26.2'))
+String irisVersion = providers.gradleProperty('irisVersion').getOrElse(rootProperties.getProperty('irisVersion', '4.1.0-26.2'))
 String minecraftVersion = providers.gradleProperty('minecraftVersion').getOrElse(rootProperties.getProperty('minecraftVersion', '26.2'))
 String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse(rootProperties.getProperty('neoForgeVersion', '26.2.0.59'))
-String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186'))
+String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate').getOrElse(rootProperties.getProperty('volmLibCoordinate', 'com.github.VolmitSoftware:VolmLib:master-SNAPSHOT'))
 Closure<String> irisArtifactName = { String platform, String targetVersion ->
     return "Iris v${project.version} [${platform}] ${targetVersion}.jar"
 }
diff --git a/build.gradle b/build.gradle
index cd0e144fb..db68c4a91 100644
--- a/build.gradle
+++ b/build.gradle
@@ -39,7 +39,7 @@ plugins {
 }
 
 group = 'art.arcane'
-version = providers.gradleProperty('irisVersion').getOrElse('4.0.0-26.2')
+version = providers.gradleProperty('irisVersion').getOrElse('4.1.0-26.2')
 
 project(':core') {
     group = 'art.arcane'
@@ -52,7 +52,7 @@ String fabricLoaderVersion = providers.gradleProperty('fabricLoaderVersion').get
 String forgeVersion = providers.gradleProperty('forgeVersion').getOrElse('26.2-65.1.1')
 String neoForgeVersion = providers.gradleProperty('neoForgeVersion').getOrElse('26.2.0.59')
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186')
+    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
     .get()
 String useLocalVolmLib = providers.gradleProperty('useLocalVolmLib').getOrElse('true')
 String localVolmLibDirectory = providers.gradleProperty('localVolmLibDirectory').getOrNull()
diff --git a/core/build.gradle b/core/build.gradle
index d63e189b0..c21c13dc4 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -35,7 +35,7 @@ plugins {
 
 def lib = 'art.arcane.iris.util'
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186')
+    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
     .get()
 
 String languageSourceReference = providers.gradleProperty('languageRevision').orElse('master').get()
diff --git a/core/src/main/java/art/arcane/iris/core/pack/PackDownloader.java b/core/src/main/java/art/arcane/iris/core/pack/PackDownloader.java
index 67512a170..120c61386 100644
--- a/core/src/main/java/art/arcane/iris/core/pack/PackDownloader.java
+++ b/core/src/main/java/art/arcane/iris/core/pack/PackDownloader.java
@@ -63,10 +63,10 @@ import java.util.zip.ZipInputStream;
 public final class PackDownloader {
     private static final String DEFAULT_OVERWORLD_PACK = "overworld";
     private static final String DEFAULT_OVERWORLD_URL =
-            "https://github.com/IrisDimensions/overworld/releases/download/4002/overworld.zip";
+            "https://github.com/IrisDimensions/overworld/releases/latest/download/overworld.zip";
     private static final String UNDERWORLD_PACK = "underworld";
     private static final String UNDERWORLD_URL =
-            "https://github.com/IrisDimensions/underworld/releases/download/1005/underworld.zip";
+            "https://github.com/IrisDimensions/underworld/releases/latest/download/underworld.zip";
     private static final List<String> BUILT_IN_PACK_KEYS = List.of(DEFAULT_OVERWORLD_PACK, UNDERWORLD_PACK);
     private static final Map<String, String> BUILT_IN_PACK_URLS = Map.of(
             DEFAULT_OVERWORLD_PACK, DEFAULT_OVERWORLD_URL,
diff --git a/core/src/test/java/art/arcane/iris/core/pack/PackDownloaderTest.java b/core/src/test/java/art/arcane/iris/core/pack/PackDownloaderTest.java
index 7bfab5029..1a72c20e1 100644
--- a/core/src/test/java/art/arcane/iris/core/pack/PackDownloaderTest.java
+++ b/core/src/test/java/art/arcane/iris/core/pack/PackDownloaderTest.java
@@ -107,7 +107,7 @@ public class PackDownloaderTest {
     @Test
     public void resolvesDefaultOverworldStableRelease() {
         assertEquals(
-                "https://github.com/IrisDimensions/overworld/releases/download/4002/overworld.zip",
+                "https://github.com/IrisDimensions/overworld/releases/latest/download/overworld.zip",
                 PackDownloader.builtInPackUrl("overworld")
         );
         assertTrue(PackDownloader.isDefaultOverworld("overworld"));
@@ -118,7 +118,7 @@ public class PackDownloaderTest {
     @Test
     public void resolvesUnderworldStableRelease() {
         assertEquals(
-                "https://github.com/IrisDimensions/underworld/releases/download/1005/underworld.zip",
+                "https://github.com/IrisDimensions/underworld/releases/latest/download/underworld.zip",
                 PackDownloader.builtInPackUrl("underworld")
         );
         assertTrue(PackDownloader.isBuiltInPack("underworld"));
diff --git a/gradle.properties b/gradle.properties
index ac2f45f37..0138f76d6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -23,11 +23,11 @@ org.gradle.configureondemand=false
 
 nmsTools.repo-url=https://repo.codemc.org/repository/nms/
 nmsTools.specialSourceVersion=1.11.4
-irisVersion=4.0.1-26.2
+irisVersion=4.1.0-26.2
 minecraftVersion=26.2
 # Bukkit plugin api-version: lowest supported Minecraft release line so one artifact loads on 26.1.2 and 26.2
 apiVersion=26.1
 fabricLoaderVersion=0.19.3
 forgeVersion=26.2-65.1.1
 neoForgeVersion=26.2.0.59
-volmLibCoordinate=com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186
+volmLibCoordinate=com.github.VolmitSoftware:VolmLib:master-SNAPSHOT
diff --git a/probe/build.gradle b/probe/build.gradle
index 732d28431..502539bc4 100644
--- a/probe/build.gradle
+++ b/probe/build.gradle
@@ -10,7 +10,7 @@ application {
 }
 
 String volmLibCoordinate = providers.gradleProperty('volmLibCoordinate')
-    .orElse('com.github.VolmitSoftware:VolmLib:e6574cf814b3dd670385a4d632a63fde2038e186')
+    .orElse('com.github.VolmitSoftware:VolmLib:master-SNAPSHOT')
     .get()
 
 dependencies {