diff --git a/packages/babel-compiler/package.js b/packages/babel-compiler/package.js
index b1304430198..5c041c6882d 100644
--- a/packages/babel-compiler/package.js
+++ b/packages/babel-compiler/package.js
@@ -6,7 +6,7 @@ Package.describe({
   // isn't possible because you can't publish a non-recommended
   // release with package versions that don't have a pre-release
   // identifier at the end (eg, -dev)
-  version: '6.14.1-rc.0'
+  version: '6.14.1-rc.1'
 });
 
 Npm.depends({
diff --git a/packages/ecmascript/package.js b/packages/ecmascript/package.js
index da6553cc76b..9021e1d485d 100644
--- a/packages/ecmascript/package.js
+++ b/packages/ecmascript/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: 'ecmascript',
-  version: '0.6.2',
+  version: '0.6.3-rc.1',
   summary: 'Compiler plugin that supports ES2015+ in all .js files',
   documentation: 'README.md'
 });
diff --git a/packages/meteor-tool/package.js b/packages/meteor-tool/package.js
index 16d753d9e34..85b8f020b61 100644
--- a/packages/meteor-tool/package.js
+++ b/packages/meteor-tool/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "The Meteor command-line tool",
-  version: '1.4.3-1-rc.0'
+  version: '1.4.3-1-rc.1'
 });
 
 Package.includeTool();
diff --git a/packages/modules/package.js b/packages/modules/package.js
index 003be5036fb..d31eccb78cd 100644
--- a/packages/modules/package.js
+++ b/packages/modules/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: "modules",
-  version: "0.7.9-rc.0",
+  version: "0.7.9-rc.1",
   summary: "CommonJS module system",
   documentation: "README.md"
 });
diff --git a/scripts/admin/meteor-release-experimental.json b/scripts/admin/meteor-release-experimental.json
index a99ea4bab6a..836fd0272df 100644
--- a/scripts/admin/meteor-release-experimental.json
+++ b/scripts/admin/meteor-release-experimental.json
@@ -1,6 +1,6 @@
 {
  "track": "METEOR",
- "version": "1.4.3.1-rc.0",
+ "version": "1.4.3.1-rc.1",
  "recommended": false,
  "official": false,
  "description": "Meteor"