diff --git a/build.gradle b/build.gradle
index a970492..51f3576 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ plugins {
 
 apply plugin: 'net.minecraftforge.gradle.forge'
 
-version = "1.2.2"
+version = "1.2.3"
 group= "ljfa.tntutils"
 archivesBaseName = "tnt_utilities-mc1.12"
 
@@ -72,3 +72,23 @@ processResources {
         exclude 'mcmod.info'
     }
 }
+
+task signJar(type: SignJar, dependsOn: reobfJar) {
+    // Skips if the keyStore property is missing.
+    onlyIf {
+        project.hasProperty('keyStore')
+    }
+
+    // findProperty allows us to reference the property without it existing.
+    // Using project.propName would cause the script to fail validation if
+    // the property did not exist.
+    keyStore = project.findProperty('keyStore')
+    alias = project.findProperty('keyStoreAlias')
+    storePass = project.findProperty('keyStorePass')
+    keyPass = project.findProperty('keyStoreKeyPass')
+    inputFile = jar.archivePath
+    outputFile = jar.archivePath
+}
+
+// Runs this task automatically when reobfJar is ran.
+reobfJar.finalizedBy signJar