diff --git a/common-2.11.x.conf b/common-2.11.x.conf
index 9f2f91a58..0c779e1e0 100644
--- a/common-2.11.x.conf
+++ b/common-2.11.x.conf
@@ -63,7 +63,7 @@ vars: {
   playframework-ref            : "playframework/playframework.git#3b63ece20430f202363dc025a36fd00ed5d0283f"
   // fixed sha from master that has Scala 2.11 patches merged
   parboiled-ref                : "sirthias/parboiled.git#c53e650212f222c9b1f75fa1ab13d7cab9db164e"
-  // fixed sha/tag (a compromise), the sha points at master that does support Scala 2.11
+  // fixed sha/tag (a compromise), the sha points at master that supports Scala 2.11
   // but haven't diverged from 1.3 release yet
   scala-arm-ref                : "jsuereth/scala-arm.git#9c5e817a88de804c82a6b2f1447ef6fed9a46a57"
   // fixed sha/tag (a compromise)
@@ -77,6 +77,8 @@ vars: {
   // https://github.com/valotrading/zeromq-scala-binding/commit/c2a8a87673a1a3468486d1af9a6460bfed25c7a2
   // therefore (which has a broken libdep of scalatest, however (cross full)):
   zeromq-scala-binding-ref     : "valotrading/zeromq-scala-binding.git#062e9438e322ec29d75b9649cb2aafa6ba3198a6"
+  // fixed sha/tag (a compromise), the sha points at master that supports Scala 2.11
+  spire-ref                    : "non/spire.git#3d2a41e91a1f6946fac63660f6157d4a6e4a281d"
 
   // tracking upstream (the ideal)
   akka-ref                     : "akka/akka.git"
@@ -95,6 +97,7 @@ vars: {
   sbt-ref                      : "sbt/sbt.git#0.13"
   scalaz-ref                   : "scalaz/scalaz.git#series/7.0.x"
   shapeless-ref                : "milessabin/shapeless.git#scala-2.11.x"
+  discipline-ref               : "typelevel/discipline.git#v0.2"
 
   // version settings
   sbt-version-override         : "0.13.1"
@@ -277,6 +280,18 @@ build += {
     }
   }
 
+  ${vars.base} {
+    name: "discipline"
+    uri: "https://github.com/"${vars.discipline-ref}
+    extra.sbt-version: ${vars.sbt-version-override}
+  }
+
+  ${vars.base} {
+    name: "spire"
+    uri: "https://github.com/"${vars.spire-ref}
+    extra.sbt-version: ${vars.sbt-version-override}
+  }
+
   ${vars.base} {
     name:   "genjavadoc-plugin",
     uri:    "https://github.com/"${vars.genjavadoc-ref}