diff --git a/Dockerfile b/Dockerfile
index 74eca0efc..7e1058d47 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@
 # NOTES:            Currently this is one big dockerfile and non-optimal.
 
 #may include suffix
-ARG OPENSTUDIO_VERSION=3.0.0-rc2
+ARG OPENSTUDIO_VERSION=3.0.0-rc3
 FROM nrel/openstudio:$OPENSTUDIO_VERSION as base
 MAINTAINER Nicholas Long nicholas.long@nrel.gov
 
diff --git a/appveyor.yml b/appveyor.yml
index c37351040..ea204f795 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,8 +3,8 @@ version: 1.0.{build}-{branch}
 environment:
   USE_TESTING_TIMEOUTS: "true"
   OPENSTUDIO_VERSION: 3.0.0
-  OPENSTUDIO_VERSION_SHA: c1a45f4753
-  OPENSTUDIO_VERSION_EXT: -rc2
+  OPENSTUDIO_VERSION_SHA: 949b904134
+  OPENSTUDIO_VERSION_EXT: -rc3
   OPENSTUDIO_TEST_EXE: C:\projects\openstudio\bin\openstudio.exe
   RUBY_VERSION: 25-x64
   BUNDLER_VERSION: 2.1.0
diff --git a/ci/appveyor/setup.cmd b/ci/appveyor/setup.cmd
index cbd5b0f7d..f94922bae 100644
--- a/ci/appveyor/setup.cmd
+++ b/ci/appveyor/setup.cmd
@@ -3,8 +3,8 @@ set GEM_HOME=C:\projects\openstudio-server\gems
 set GEM_PATH=C:\projects\openstudio-server\gems;C:\projects\openstudio-server\gems\gems\bundler\gems
 echo Downloading and Installing OpenStudio (develop branch, %OPENSTUDIO_VERSION%%OPENSTUDIO_VERSION_EXT%.%OPENSTUDIO_VERSION_SHA%)
 REM install  develop build
-curl -SLO --insecure https://openstudio-builds.s3.amazonaws.com/3.0.0/OpenStudio-3.0.0-rc2%%2Bc1a45f4753-Windows.exe
-OpenStudio-3.0.0-rc2%%2Bc1a45f4753-Windows.exe --script ci/appveyor/install-windows.qs
+curl -SLO --insecure https://openstudio-builds.s3.amazonaws.com/3.0.0/OpenStudio-3.0.0-rc3%%2B949b904134-Windows.exe
+OpenStudio-3.0.0-rc3%%2B949b904134-Windows.exe --script ci/appveyor/install-windows.qs
 move C:\openstudio C:\projects\openstudio
 dir C:\projects\openstudio
 dir C:\projects\openstudio\Ruby
diff --git a/ci/travis/install_openstudio.sh b/ci/travis/install_openstudio.sh
index 4886e1bda..fc1b889d9 100755
--- a/ci/travis/install_openstudio.sh
+++ b/ci/travis/install_openstudio.sh
@@ -10,7 +10,7 @@ if [ ! -z ${OPENSTUDIO_VERSION} ] && [ ! -z ${OPENSTUDIO_SHA} ]; then
     # OPENSTUDIO_VERSION_EXT may be empty
     #OPENSTUDIO_DOWNLOAD_FILENAME=OpenStudio-$OPENSTUDIO_VERSION$OPENSTUDIO_VERSION_EXT.$OPENSTUDIO_SHA-Linux.deb
     # Dev3 hardcoding:
-    OPENSTUDIO_DOWNLOAD_FILENAME=OpenStudio-3.0.0-rc2%2Bc1a45f4753-Linux.deb
+    OPENSTUDIO_DOWNLOAD_FILENAME=OpenStudio-3.0.0-rc3%2B949b904134-Linux.deb
 
     echo "Installing OpenStudio ${OPENSTUDIO_DOWNLOAD_FILENAME}"
 
diff --git a/ci/travis/setup.sh b/ci/travis/setup.sh
index 2456b993f..e1b2476ee 100755
--- a/ci/travis/setup.sh
+++ b/ci/travis/setup.sh
@@ -26,14 +26,14 @@ else
         cp mongodb-osx-x86_64-3.4.18/bin/* /usr/local/bin/
 
         # Install openstudio -- Use the install script that is in this repo now, the one on OpenStudio/develop has changed
-        curl -SLO --insecure https://openstudio-builds.s3.amazonaws.com/3.0.0/OpenStudio-3.0.0-rc2%2Bc1a45f4753-Darwin.dmg
+        curl -SLO --insecure https://openstudio-builds.s3.amazonaws.com/3.0.0/OpenStudio-3.0.0-rc3%2B949b904134-Darwin.dmg
         # OSX downloads with %2B. These are unsafe chars in url strings
-        hdiutil attach OpenStudio-3.0.0-rc2%2Bc1a45f4753-Darwin.dmg
+        hdiutil attach OpenStudio-3.0.0-rc3%2B949b904134-Darwin.dmg
         sed -i -e "s|REPLACEME|$HOME/openstudio|" ci/travis/install-mac.qs
         rm -rf $HOME/openstudio
         # Will install into $HOME/openstudio and RUBYLIB will be $HOME/openstudio/Ruby
-        sudo /Volumes/OpenStudio-3.0.0-rc2+c1a45f4753-Darwin/OpenStudio-3.0.0-rc2+c1a45f4753-Darwin.app/Contents/MacOS/OpenStudio-3.0.0-rc2+c1a45f4753-Darwin --script ci/travis/install-mac.qs
-        hdiutil detach /Volumes/OpenStudio-3.0.0-rc2+c1a45f4753 -force
+        sudo /Volumes/OpenStudio-3.0.0-rc3+949b904134-Darwin/OpenStudio-3.0.0-rc3+949b904134-Darwin.app/Contents/MacOS/OpenStudio-3.0.0-rc3+949b904134-Darwin --script ci/travis/install-mac.qs
+        hdiutil detach /Volumes/OpenStudio-3.0.0-rc3+949b904134 -force
 
         export PATH="$TRAVIS_BUILD_DIR/gems/bin:/usr/local/opt/ruby@2.5/bin:$HOME/openstudio/bin:$PATH"
         export RUBYLIB="$HOME/openstudio/Ruby"
diff --git a/server/app/lib/openstudio_server/version.rb b/server/app/lib/openstudio_server/version.rb
index 4babe26a3..222e8bab3 100644
--- a/server/app/lib/openstudio_server/version.rb
+++ b/server/app/lib/openstudio_server/version.rb
@@ -37,6 +37,6 @@ module OpenstudioServer
   VERSION = '3.0.0'.freeze
   # format should be ^.*\-{1}[a-z]+[0-9]+
   # for example: -rc1, -beta6, -customusecase0
-  VERSION_EXT = '-rc2'.freeze # with preceding - or +
-  OS_SHA = 'c1a45f4753'
+  VERSION_EXT = '-rc3'.freeze # with preceding - or +
+  OS_SHA = '949b904134'
 end