diff --git a/buildSrc/src/main/kotlin/com/dfsek/terra/Versions.kt b/buildSrc/src/main/kotlin/com/dfsek/terra/Versions.kt
new file mode 100644
index 000000000..363ac122f
--- /dev/null
+++ b/buildSrc/src/main/kotlin/com/dfsek/terra/Versions.kt
@@ -0,0 +1,23 @@
+package com.dfsek.terra
+
+object Versions {
+    object Libraries {
+        const val tectonic = "3.1.0"
+        
+        const val cloud = "1.6.1"
+        
+        const val slf4j = "1.7.32"
+        const val log4j_slf4j_impl = "2.14.1"
+    }
+    
+    object Fabric {
+        const val fabricAPI = "0.44.0+1.18"
+        const val minecraft = "1.18.1"
+        const val yarn = "$minecraft+build.7"
+    }
+    
+    object Bukkit {
+        const val paper = "1.18-R0.1-SNAPSHOT"
+        const val paperLib = "1.0.5"
+    }
+}
\ No newline at end of file
diff --git a/common/addons/language-yaml/build.gradle.kts b/common/addons/language-yaml/build.gradle.kts
index 3b8fcb852..b1336f135 100644
--- a/common/addons/language-yaml/build.gradle.kts
+++ b/common/addons/language-yaml/build.gradle.kts
@@ -1,8 +1,9 @@
+import com.dfsek.terra.Versions
 import com.dfsek.terra.version
 
 version = version("0.1.0")
 
 dependencies {
-    shadedImplementation("com.dfsek.tectonic:yaml:3.1.0")
+    shadedImplementation("com.dfsek.tectonic:yaml:${Versions.Libraries.tectonic}")
     shadedApi(project(":common:addons:manifest-addon-loader"))
 }
diff --git a/common/addons/manifest-addon-loader/build.gradle.kts b/common/addons/manifest-addon-loader/build.gradle.kts
index 2e437904b..c545fab4b 100644
--- a/common/addons/manifest-addon-loader/build.gradle.kts
+++ b/common/addons/manifest-addon-loader/build.gradle.kts
@@ -1,10 +1,11 @@
+import com.dfsek.terra.Versions
 import com.dfsek.terra.version
 
 version = version("0.1.0")
 
 dependencies {
     shadedApi("commons-io:commons-io:2.6")
-    shadedImplementation("com.dfsek.tectonic:yaml:3.1.0")
+    shadedImplementation("com.dfsek.tectonic:yaml:${Versions.Libraries.tectonic}")
 }
 
 tasks.withType<Jar> {
diff --git a/common/api/core/build.gradle.kts b/common/api/core/build.gradle.kts
index c845b8a78..4cd1feee3 100644
--- a/common/api/core/build.gradle.kts
+++ b/common/api/core/build.gradle.kts
@@ -1,3 +1,5 @@
+import com.dfsek.terra.Versions
+
 dependencies {
     shadedApi(project(":common:api:util"))
     shadedApi(project(":common:api:noise"))
@@ -6,7 +8,7 @@ dependencies {
     
     shadedApi("net.jafama:jafama:2.3.2")
     
-    shadedApi("org.slf4j:slf4j-api:1.7.32")
+    shadedApi("org.slf4j", "slf4j-api", Versions.Libraries.slf4j)
     
     shadedApi("cloud.commandframework", "cloud-core", "1.6.1")
 }
diff --git a/common/api/util/build.gradle.kts b/common/api/util/build.gradle.kts
index 67cf30eef..98627cfd4 100644
--- a/common/api/util/build.gradle.kts
+++ b/common/api/util/build.gradle.kts
@@ -1,5 +1,7 @@
+import com.dfsek.terra.Versions
+
 dependencies {
-    shadedApi("com.dfsek.tectonic:common:3.1.0")
+    shadedApi("com.dfsek.tectonic:common:${Versions.Libraries.tectonic}")
     
     shadedApi("net.jafama:jafama:2.3.2")
 }
diff --git a/common/implementation/base/build.gradle.kts b/common/implementation/base/build.gradle.kts
index f86cbebcf..c20efd26f 100644
--- a/common/implementation/base/build.gradle.kts
+++ b/common/implementation/base/build.gradle.kts
@@ -1,3 +1,5 @@
+import com.dfsek.terra.Versions
+
 dependencies {
     shadedApi(project(":common:api"))
     shadedApi(project(":common:implementation:bootstrap-addon-loader"))
@@ -6,7 +8,7 @@ dependencies {
     shadedApi("commons-io:commons-io:2.6")
     shadedImplementation("org.apache.commons:commons-text:1.9")
     
-    shadedImplementation("com.dfsek.tectonic:yaml:3.1.0")
+    shadedImplementation("com.dfsek.tectonic:yaml:${Versions.Libraries.tectonic}")
     
     shadedImplementation("org.yaml:snakeyaml:1.27")
     shadedImplementation("org.ow2.asm:asm:9.2")
diff --git a/platforms/bukkit/build.gradle.kts b/platforms/bukkit/build.gradle.kts
index c1c797eb6..06776ac9d 100644
--- a/platforms/bukkit/build.gradle.kts
+++ b/platforms/bukkit/build.gradle.kts
@@ -1,4 +1,5 @@
 import com.dfsek.terra.addonDir
+import com.dfsek.terra.Versions
 import com.dfsek.terra.gitClone
 import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import java.net.URL
@@ -25,12 +26,12 @@ dependencies {
         because("Minecraft 1.17+ includes slf4j 1.8.0-beta4, so we need to shade it for other versions.")
     }
     
-    compileOnly("io.papermc.paper:paper-api:1.18-R0.1-SNAPSHOT")
-    shadedImplementation("io.papermc:paperlib:1.0.5")
+    compileOnly("io.papermc.paper", "paper-api", Versions.Bukkit.paper)
+    shadedImplementation("io.papermc", "paperlib", Versions.Bukkit.paperLib)
     
     shadedApi("com.google.guava:guava:30.0-jre")
     
-    shadedApi("cloud.commandframework", "cloud-paper", "1.6.1")
+    shadedApi("cloud.commandframework", "cloud-paper", Versions.Libraries.cloud)
 }
 
 val jvmFlags = listOf(
diff --git a/platforms/fabric/build.gradle.kts b/platforms/fabric/build.gradle.kts
index c45ee5825..3b217e2f7 100644
--- a/platforms/fabric/build.gradle.kts
+++ b/platforms/fabric/build.gradle.kts
@@ -1,9 +1,9 @@
 import com.dfsek.terra.addonDir
+import com.dfsek.terra.Versions
 import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import com.modrinth.minotaur.TaskModrinthUpload
 import net.fabricmc.loom.task.RemapJarTask
 
-val minecraft = "1.18.1"
 val yarn = "6"
 val fabricLoader = "0.12.12"
 
@@ -16,27 +16,27 @@ plugins {
 dependencies {
     shadedApi(project(":common:implementation:base"))
     
-    shadedApi("org.slf4j:slf4j-api:1.7.32") {
+    shadedApi("org.slf4j", "slf4j-api", Versions.Libraries.slf4j) {
         because("Minecraft 1.17+ includes slf4j 1.8.0-beta4, but we want slf4j 1.7.")
     }
-    shaded("org.apache.logging.log4j:log4j-slf4j-impl:2.14.1") {
+    shaded("org.apache.logging.log4j", "log4j-slf4j-impl", Versions.Libraries.log4j_slf4j_impl) {
         because("Minecraft 1.17+ includes slf4j 1.8.0-beta4, but we want slf4j 1.7.")
         exclude("org.apache.logging.log4j")
     }
     
-    minecraft("com.mojang:minecraft:$minecraft") {
+    minecraft("com.mojang:minecraft:${Versions.Fabric.minecraft}") {
         exclude("org.slf4j")
     }
-    mappings("net.fabricmc:yarn:$minecraft+build.$yarn:v2")
+    mappings("net.fabricmc:yarn:${Versions.Fabric.yarn}:v2")
     modImplementation("net.fabricmc:fabric-loader:$fabricLoader")
     
     
     setOf("fabric-command-api-v1", "fabric-lifecycle-events-v1").forEach { apiModule ->
-        modImplementation(fabricApi.module(apiModule, "0.44.0+1.18"))?.let { include(it) }
+        modImplementation(fabricApi.module(apiModule, Versions.Fabric.fabricAPI))?.let { include(it) }
     }
     
-    modImplementation("me.lucko:fabric-permissions-api:0.1-SNAPSHOT")?.let { include(it) }
-    modImplementation("cloud.commandframework:cloud-fabric:1.6.1")?.let { include(it) }
+    modImplementation(include("me.lucko", "fabric-permissions-api", "0.1-SNAPSHOT"))
+    modImplementation(include("cloud.commandframework", "cloud-fabric", Versions.Libraries.cloud))
 }
 
 loom {
@@ -76,6 +76,6 @@ tasks.register<TaskModrinthUpload>("publishModrinth") {
     versionNumber = "${project.version}-fabric"
     uploadFile = remapped.get().archiveFile.get().asFile
     releaseType = "beta"
-    addGameVersion(minecraft)
+    addGameVersion(Versions.Fabric.minecraft)
     addLoader("fabric")
 }
\ No newline at end of file