diff --git a/.github/workflows/build_installer.yml b/.github/workflows/build_installer.yml
index f31a14b41..91f290af9 100644
--- a/.github/workflows/build_installer.yml
+++ b/.github/workflows/build_installer.yml
@@ -4,6 +4,11 @@ on:
   workflow_dispatch: {}
   push:
 
+  pull_request:
+      branches:
+      - RB-2.5
+      - RB-2.6
+
 env:
   NATRON_BUILD_WORKSPACE: 'D:/nbw'
   CI: 'True'
@@ -42,7 +47,7 @@ jobs:
 
           cd tools/jenkins
 
-          WORKSPACE=${NATRON_BUILD_WORKSPACE_UNIX} BUILD_NAME=natron BUILD_NUMBER=1 BITS=64 NATRON_LICENSE=GPL GIT_URL=${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}.git GIT_URL_IS_NATRON=1 SNAPSHOT_BRANCH=${GITHUB_REF_NAME} QT_VERSION_MAJOR=5 DISABLE_BREAKPAD=1 NOUPDATE=1 MKJOBS=$(nproc) MINIMIZE_DISK_USAGE=1 UNIT_TESTS=true ./launchBuildMain.sh
+          WORKSPACE=${NATRON_BUILD_WORKSPACE_UNIX} BUILD_NAME=natron BUILD_NUMBER=1 BITS=64 NATRON_LICENSE=GPL GIT_URL=${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}.git GIT_URL_IS_NATRON=1 SNAPSHOT_COMMIT=${GITHUB_SHA} QT_VERSION_MAJOR=5 DISABLE_BREAKPAD=1 NOUPDATE=1 MKJOBS=$(nproc) MINIMIZE_DISK_USAGE=1 UNIT_TESTS=true ./launchBuildMain.sh
 
           ARCHIVE_DIR=${NATRON_BUILD_WORKSPACE_UNIX}/builds_archive/natron/1
           INSTALLER_ZIP_UNIX=$(ls ${ARCHIVE_DIR}/Natron*Windows-x86_64.zip)