diff --git a/packages/stream/package.json b/packages/stream/package.json
index 74628861..07537f10 100644
--- a/packages/stream/package.json
+++ b/packages/stream/package.json
@@ -38,7 +38,7 @@
     "167": "0.37.0",
     "@most/core": "0.11.4",
     "@most/disposable": "0.11.0",
-    "@most/scheduler": "0.11.0",
+    "@most/scheduler": "0.12.0",
     "@motorcycle/types": "1.5.0"
   }
 }
diff --git a/packages/stream/yarn.lock b/packages/stream/yarn.lock
index 827abc2e..d72640e8 100644
--- a/packages/stream/yarn.lock
+++ b/packages/stream/yarn.lock
@@ -22,11 +22,18 @@
     "@most/prelude" "^1.6.2"
     "@most/types" "^0.10.0"
 
-"@most/prelude@^1.6.2":
-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/@most/prelude/-/prelude-1.6.2.tgz#e022db0a3522ea45a427f739570b99f6a6b49162"
+"@most/prelude@^1.6.2", "@most/prelude@^1.6.3":
+  version "1.6.3"
+  resolved "https://registry.yarnpkg.com/@most/prelude/-/prelude-1.6.3.tgz#4eb453acb3251c47b92daa98d1652b704501c027"
 
-"@most/scheduler@0.11.0", "@most/scheduler@^0.11.0":
+"@most/scheduler@0.12.0":
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/@most/scheduler/-/scheduler-0.12.0.tgz#149b1e40194379a96dc4f10f321010c463feeac8"
+  dependencies:
+    "@most/prelude" "^1.6.3"
+    "@most/types" "^0.11.0"
+
+"@most/scheduler@^0.11.0":
   version "0.11.0"
   resolved "https://registry.yarnpkg.com/@most/scheduler/-/scheduler-0.11.0.tgz#0f67a0f097c9358e4308931e206c03a30f87faf4"
   dependencies:
@@ -37,8 +44,12 @@
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/@most/types/-/types-0.10.0.tgz#5a60b581915349b210a13fed1563e9d06cba287f"
 
-"@motorcycle/types@1.3.0":
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/@motorcycle/types/-/types-1.3.0.tgz#3a895f6dd601171ea3310211328b8045badae22b"
+"@most/types@^0.11.0":
+  version "0.11.0"
+  resolved "https://registry.yarnpkg.com/@most/types/-/types-0.11.0.tgz#39ca6c156163a65ba754ca8c7ebdb309d21197c6"
+
+"@motorcycle/types@1.5.0":
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/@motorcycle/types/-/types-1.5.0.tgz#c195204212f8ee59f25199fab9c7e17f3956dfdb"
   dependencies:
     "@most/types" "^0.10.0"
diff --git a/packages/test/package.json b/packages/test/package.json
index 0e9f3c7f..f61ce176 100644
--- a/packages/test/package.json
+++ b/packages/test/package.json
@@ -34,7 +34,7 @@
   },
   "homepage": "https://github.com/motorcyclets/motorcycle#readme",
   "dependencies": {
-    "@most/scheduler": "0.11.0",
+    "@most/scheduler": "0.12.0",
     "@motorcycle/stream": "1.6.0",
     "@motorcycle/types": "1.5.0"
   },
diff --git a/packages/test/yarn.lock b/packages/test/yarn.lock
index ce6460f8..26ebc374 100644
--- a/packages/test/yarn.lock
+++ b/packages/test/yarn.lock
@@ -6,15 +6,6 @@
   version "0.37.0"
   resolved "https://registry.yarnpkg.com/167/-/167-0.37.0.tgz#8cbe1589b2e9fa363eb7d128b3e46572c44a849b"
 
-"@most/core@0.11.2":
-  version "0.11.2"
-  resolved "https://registry.yarnpkg.com/@most/core/-/core-0.11.2.tgz#6e3615fb4fc5a6a32cd35acb10a513a0e56df150"
-  dependencies:
-    "@most/disposable" "^0.11.0"
-    "@most/prelude" "^1.6.2"
-    "@most/scheduler" "^0.11.0"
-    "@most/types" "^0.10.0"
-
 "@most/core@0.11.4":
   version "0.11.4"
   resolved "https://registry.yarnpkg.com/@most/core/-/core-0.11.4.tgz#324147de4ac86320313a3d9240b30c5fced72d1b"
@@ -31,9 +22,9 @@
     "@most/prelude" "^1.6.2"
     "@most/types" "^0.10.0"
 
-"@most/prelude@^1.6.2":
-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/@most/prelude/-/prelude-1.6.2.tgz#e022db0a3522ea45a427f739570b99f6a6b49162"
+"@most/prelude@^1.6.2", "@most/prelude@^1.6.3":
+  version "1.6.3"
+  resolved "https://registry.yarnpkg.com/@most/prelude/-/prelude-1.6.3.tgz#4eb453acb3251c47b92daa98d1652b704501c027"
 
 "@most/scheduler@0.11.0", "@most/scheduler@^0.11.0":
   version "0.11.0"
@@ -42,22 +33,33 @@
     "@most/prelude" "^1.6.2"
     "@most/types" "^0.10.0"
 
+"@most/scheduler@0.12.0":
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/@most/scheduler/-/scheduler-0.12.0.tgz#149b1e40194379a96dc4f10f321010c463feeac8"
+  dependencies:
+    "@most/prelude" "^1.6.3"
+    "@most/types" "^0.11.0"
+
 "@most/types@^0.10.0":
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/@most/types/-/types-0.10.0.tgz#5a60b581915349b210a13fed1563e9d06cba287f"
 
-"@motorcycle/stream@1.4.0":
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/@motorcycle/stream/-/stream-1.4.0.tgz#f58e2e675b3383049d3737d985eb737fed0dffa7"
+"@most/types@^0.11.0":
+  version "0.11.0"
+  resolved "https://registry.yarnpkg.com/@most/types/-/types-0.11.0.tgz#39ca6c156163a65ba754ca8c7ebdb309d21197c6"
+
+"@motorcycle/stream@1.6.0":
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/@motorcycle/stream/-/stream-1.6.0.tgz#ef2103414b85dcd3f329edff0884fce86ca684a5"
   dependencies:
     "167" "0.37.0"
-    "@most/core" "0.11.2"
+    "@most/core" "0.11.4"
     "@most/disposable" "0.11.0"
     "@most/scheduler" "0.11.0"
-    "@motorcycle/types" "1.3.0"
+    "@motorcycle/types" "1.5.0"
 
-"@motorcycle/types@1.3.0":
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/@motorcycle/types/-/types-1.3.0.tgz#3a895f6dd601171ea3310211328b8045badae22b"
+"@motorcycle/types@1.5.0":
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/@motorcycle/types/-/types-1.5.0.tgz#c195204212f8ee59f25199fab9c7e17f3956dfdb"
   dependencies:
     "@most/types" "^0.10.0"