diff --git a/gradle/impl.gradle b/gradle/impl.gradle
index 624a654..3fcce2a 100644
--- a/gradle/impl.gradle
+++ b/gradle/impl.gradle
@@ -7,7 +7,7 @@ if (!implFor.empty) {
     zipTree(implFor.first()).matching { PatternFilterable filter ->
         filter.include "fabric.mod.json"
     }.each {
-        version = version + "+" + new JsonSlurper().parse(it)["version"]
+        version = version + "+" + (new JsonSlurper().parse(it)["version"] as String).replace('+', '-')
     }
 }