diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 697755cc..d5ee964f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -2,7 +2,8 @@
 # https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format
 
 [versions]
-com-mojang-authlib = "6.0.54"
+com-mojang-authlib-old = "3.5.41"
+com-mojang-authlib-new = "6.0.54"
 commons-lang-commons-lang = "2.6"
 io-netty-netty-buffer = "4.1.90.Final"
 io-netty-netty-codec = "4.1.90.Final"
@@ -21,7 +22,8 @@ junit-jupiter-version = "5.9.3"
 mockito-version = "5.12.0"
 
 [libraries]
-com-mojang-authlib = { module = "com.mojang:authlib", version.ref = "com-mojang-authlib" }
+com-mojang-authlib-old = { module = "com.mojang:authlib", version.ref = "com-mojang-authlib-old" }
+com-mojang-authlib-new = { module = "com.mojang:authlib", version.ref = "com-mojang-authlib-new" }
 commons-lang-commons-lang = { module = "commons-lang:commons-lang", version.ref = "commons-lang-commons-lang" }
 io-netty-netty-buffer = { module = "io.netty:netty-buffer", version.ref = "io-netty-netty-buffer" }
 io-netty-netty-codec = { module = "io.netty:netty-codec", version.ref = "io-netty-netty-codec" }
diff --git a/nms/v1_17_R1/build.gradle.kts b/nms/v1_17_R1/build.gradle.kts
index 91c4e379..8571af8b 100644
--- a/nms/v1_17_R1/build.gradle.kts
+++ b/nms/v1_17_R1/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.17.1-R0.1-SNAPSHOT"
 
 description = "v1_17_R1"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.old)
+}
diff --git a/nms/v1_18_R1/build.gradle.kts b/nms/v1_18_R1/build.gradle.kts
index ee381726..c765e9b8 100644
--- a/nms/v1_18_R1/build.gradle.kts
+++ b/nms/v1_18_R1/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.18.1-R0.1-SNAPSHOT"
 
 description = "v1_18_R1"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.old)
+}
diff --git a/nms/v1_18_R2/build.gradle.kts b/nms/v1_18_R2/build.gradle.kts
index c494d8dd..58178158 100644
--- a/nms/v1_18_R2/build.gradle.kts
+++ b/nms/v1_18_R2/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.18.2-R0.1-SNAPSHOT"
 
 description = "v1_18_R2"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.old)
+}
diff --git a/nms/v1_19_R1/build.gradle.kts b/nms/v1_19_R1/build.gradle.kts
index ad64c1d5..f9200780 100644
--- a/nms/v1_19_R1/build.gradle.kts
+++ b/nms/v1_19_R1/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.19.1-R0.1-SNAPSHOT"
 
 description = "v1_19_R1"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.old)
+}
diff --git a/nms/v1_19_R2/build.gradle.kts b/nms/v1_19_R2/build.gradle.kts
index f5fd2a29..5ec1e58b 100644
--- a/nms/v1_19_R2/build.gradle.kts
+++ b/nms/v1_19_R2/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.19.3-R0.1-SNAPSHOT"
 
 description = "v1_19_R2"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.old)
+}
diff --git a/nms/v1_19_R3/build.gradle.kts b/nms/v1_19_R3/build.gradle.kts
index 32b8dceb..1d959227 100644
--- a/nms/v1_19_R3/build.gradle.kts
+++ b/nms/v1_19_R3/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.19.4-R0.1-SNAPSHOT"
 
 description = "v1_19_R3"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.old)
+}
diff --git a/nms/v1_20_R1/build.gradle.kts b/nms/v1_20_R1/build.gradle.kts
index c7785e89..4856ae8a 100644
--- a/nms/v1_20_R1/build.gradle.kts
+++ b/nms/v1_20_R1/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.20-R0.1-SNAPSHOT"
 
 description = "v1_20_R1"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.old)
+}
diff --git a/nms/v1_20_R2/build.gradle.kts b/nms/v1_20_R2/build.gradle.kts
index 3b9385c1..fb0ae7e3 100644
--- a/nms/v1_20_R2/build.gradle.kts
+++ b/nms/v1_20_R2/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.20.2-R0.1-SNAPSHOT"
 
 description = "v1_20_R2"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.new)
+}
diff --git a/nms/v1_20_R3/build.gradle.kts b/nms/v1_20_R3/build.gradle.kts
index eb0fda5c..43a096df 100644
--- a/nms/v1_20_R3/build.gradle.kts
+++ b/nms/v1_20_R3/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.20.3-R0.1-SNAPSHOT"
 
 description = "v1_20_R3"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.new)
+}
diff --git a/nms/v1_20_R4/build.gradle.kts b/nms/v1_20_R4/build.gradle.kts
index 2312f7e0..4c73ad23 100644
--- a/nms/v1_20_R4/build.gradle.kts
+++ b/nms/v1_20_R4/build.gradle.kts
@@ -7,3 +7,7 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 extra["craftbukkitVersion"] = "1.20.6-R0.1-SNAPSHOT"
 
 description = "v1_20_R4"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.new)
+}
diff --git a/nms/v1_21_R1/build.gradle.kts b/nms/v1_21_R1/build.gradle.kts
index 2f3ef310..2e8ca20f 100644
--- a/nms/v1_21_R1/build.gradle.kts
+++ b/nms/v1_21_R1/build.gradle.kts
@@ -6,4 +6,8 @@ apply(from = rootProject.file("nms/nmsModule.gradle"))
 
 extra["craftbukkitVersion"] = "1.21-R0.1-SNAPSHOT";
 
-description = "v1_21_R1"
\ No newline at end of file
+description = "v1_21_R1"
+
+dependencies {
+    compileOnly(libs.com.mojang.authlib.new)
+}
\ No newline at end of file
diff --git a/plugin/build.gradle.kts b/plugin/build.gradle.kts
index a545cb3c..fb2a4bf2 100644
--- a/plugin/build.gradle.kts
+++ b/plugin/build.gradle.kts
@@ -9,7 +9,7 @@ dependencies {
     compileOnly(libs.io.netty.netty.buffer)
     compileOnly(libs.io.netty.netty.codec)
     compileOnly(libs.commons.lang.commons.lang)
-    compileOnly(libs.com.mojang.authlib)
+    compileOnly(libs.com.mojang.authlib.new)
     compileOnly(libs.org.spigotmc.spigot.api)
     compileOnly(libs.com.retro.packetevents)
     compileOnly(libs.libsdisguises.minimessage)
diff --git a/shared/build.gradle.kts b/shared/build.gradle.kts
index e53adac4..89440a5b 100644
--- a/shared/build.gradle.kts
+++ b/shared/build.gradle.kts
@@ -1,7 +1,7 @@
 dependencies {
     compileOnly(libs.org.spigotmc.spigot)
     compileOnly(libs.org.spigotmc.spigot.api)
-    compileOnly(libs.com.mojang.authlib)
+    compileOnly(libs.com.mojang.authlib.new)
     compileOnly(libs.io.papermc.paper.paper.api)
     compileOnly(libs.io.netty.netty.buffer)
     compileOnly(libs.com.retro.packetevents)