diff --git a/BUILD.tools b/BUILD.tools
index 5fede7edf..587dedc04 100644
--- a/BUILD.tools
+++ b/BUILD.tools
@@ -4,7 +4,7 @@ jar_library(
         jar(
             org = "org.scala-lang",
             name = "scala-library",
-            rev = "2.12.4",
+            rev = "2.12.6",
         ),
     ],
     scope = 'runtime'
@@ -16,7 +16,7 @@ jar_library(
         jar(
             org = "org.scala-lang",
             name = "scala-compiler",
-            rev = "2.12.4",
+            rev = "2.12.6",
         ),
     ],
 )
diff --git a/project/ScalaVersion.scala b/project/ScalaVersion.scala
index 2fa14e7bd..76451f00b 100644
--- a/project/ScalaVersion.scala
+++ b/project/ScalaVersion.scala
@@ -1,7 +1,7 @@
 
 object ScalaVersion {
 
-  def scala212 = "2.12.5"
+  def scala212 = "2.12.6"
   def scala211 = "2.11.12"
   def scala210 = "2.10.7"