diff --git a/.github/workflows/openstudio-server-tests.yml b/.github/workflows/openstudio-server-tests.yml
index e079d4b8e..9cb100281 100644
--- a/.github/workflows/openstudio-server-tests.yml
+++ b/.github/workflows/openstudio-server-tests.yml
@@ -11,8 +11,8 @@ on: [push, pull_request]
 env:
   USE_TESTING_TIMEOUTS: "true"
   OPENSTUDIO_VERSION: 3.9.0
-  OPENSTUDIO_VERSION_SHA: cc1e0bbd6d
-  OPENSTUDIO_VERSION_EXT: "-rc2"
+  OPENSTUDIO_VERSION_SHA: a000d0ea29
+  OPENSTUDIO_VERSION_EXT: "-rc3"
   DOCKER_COMPOSE_VERSION: 1.21.1
   BUNDLE_WITHOUT: native_ext
 
@@ -127,7 +127,7 @@ jobs:
       if: | 
         github.ref == 'refs/heads/master' || 
         github.ref == 'refs/heads/develop' ||
-        github.ref == 'refs/heads/3.9.0-rc1'
+        github.ref == 'refs/heads/3.9.0-rc3'
       shell: bash
       run: ./docker/deployment/scripts/deploy_docker_github_actions.sh
       env: 
diff --git a/.github/workflows/security-scan.yml b/.github/workflows/security-scan.yml
index 4aa752ba1..62cb8af81 100644
--- a/.github/workflows/security-scan.yml
+++ b/.github/workflows/security-scan.yml
@@ -11,8 +11,8 @@ on: [push, pull_request]
 env:
   USE_TESTING_TIMEOUTS: "true"
   OPENSTUDIO_VERSION: 3.9.0
-  OPENSTUDIO_VERSION_SHA: cc1e0bbd6d
-  OPENSTUDIO_VERSION_EXT: "-rc2"
+  OPENSTUDIO_VERSION_SHA: a000d0ea29
+  OPENSTUDIO_VERSION_EXT: "-rc3"
   DOCKER_COMPOSE_VERSION: 1.21.1
   BUNDLE_WITHOUT: native_ext
 
diff --git a/Dockerfile b/Dockerfile
index 309097bcc..d6260d49f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@
 
 #may include suffix
 ARG OPENSTUDIO_VERSION=3.9.0
-FROM nrel/openstudio:dev-3.9.0-rc1 as base
+FROM nrel/openstudio:dev-3.9.0-rc3 as base
 MAINTAINER Nicholas Long nicholas.long@nrel.gov
 
 ENV DEBIAN_FRONTEND=noninteractive
diff --git a/appveyor.yml b/appveyor.yml
index bcb08c579..80316caeb 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,8 +5,8 @@ image: Visual Studio 2019
 environment:
   USE_TESTING_TIMEOUTS: "true"
   OPENSTUDIO_VERSION: 3.9.0
-  OPENSTUDIO_VERSION_SHA: cc1e0bbd6d
-  OPENSTUDIO_VERSION_EXT: "-rc2"
+  OPENSTUDIO_VERSION_SHA: a000d0ea29
+  OPENSTUDIO_VERSION_EXT: "-rc3"
   OPENSTUDIO_TEST_EXE: C:\projects\openstudio\bin\openstudio.exe
   BUILD_TYPE: "test"
   SKIP_COVERALLS: "true"
diff --git a/local_setup_scripts/win64/rebuild_sr.sh b/local_setup_scripts/win64/rebuild_sr.sh
index df832deab..bbfc929ce 100644
--- a/local_setup_scripts/win64/rebuild_sr.sh
+++ b/local_setup_scripts/win64/rebuild_sr.sh
@@ -6,11 +6,11 @@ sleep 5
 docker volume rm -f osdata || true
 docker volume rm -f dbdata || true
 docker image rm 127.0.0.1:5000/openstudio-server -f
-docker build . -t="127.0.0.1:5000/openstudio-server" --build-arg OPENSTUDIO_VERSION=3.8.0
+docker build . -t="127.0.0.1:5000/openstudio-server" --build-arg OPENSTUDIO_VERSION=3.9.0
 docker push 127.0.0.1:5000/openstudio-server
 cd docker/R
 docker image rm 127.0.0.1:5000/openstudio-rserve -f
-docker build --no-cache . -t="127.0.0.1:5000/openstudio-rserve"
+docker build . -t="127.0.0.1:5000/openstudio-rserve"
 docker push 127.0.0.1:5000/openstudio-rserve
 docker pull mongo:6.0.7
 docker tag mongo:6.0.7 127.0.0.1:5000/mongo
diff --git a/server/app/lib/openstudio_server/version.rb b/server/app/lib/openstudio_server/version.rb
index 18ad7e005..fd683f6fd 100644
--- a/server/app/lib/openstudio_server/version.rb
+++ b/server/app/lib/openstudio_server/version.rb
@@ -7,6 +7,6 @@ module OpenstudioServer
   VERSION = '3.9.0'.freeze
   # format should be ^.*\-{1}[a-z]+[0-9]+
   # for example: -rc1, -beta6, -customusecase0
-  VERSION_EXT = '-rc2'.freeze # with preceding - or +
-  OS_SHA = 'cc1e0bbd6d'.freeze
+  VERSION_EXT = '-rc3'.freeze # with preceding - or +
+  OS_SHA = 'a000d0ea29'.freeze
 end