diff --git a/.ci/dev/compatibility/JenkinsfileJDK11Azul b/.ci/dev/compatibility/JenkinsfileJDK11Azul
index cd1a2da800..a325b5a11a 100644
--- a/.ci/dev/compatibility/JenkinsfileJDK11Azul
+++ b/.ci/dev/compatibility/JenkinsfileJDK11Azul
@@ -82,7 +82,7 @@ pipeline {
                 script {
                     sh "./gradlew --no-daemon properties | grep -E '^(version|group):' >version-properties"
                     /* every build related to Corda X.Y (GA, RC, HC, patch or snapshot) uses the same NexusIQ application */
-                    def version = sh (returnStdout: true, script: "grep ^version: version-properties | sed -e 's/^version: \\([0-9]\\+\\.[0-9]\\+\\).*\$/\\1/'").trim()
+                    def version = sh (returnStdout: true, script: "grep ^version: version-properties | sed -e 's/^version: \\([0-9]\\+\\(\\.[0-9]\\+\\)\\+\\).*\$/\\1/'").trim()
                     def groupId = sh (returnStdout: true, script: "grep ^group: version-properties | sed -e 's/^group: //'").trim()
                     def artifactId = 'corda'
                     nexusAppId = "${groupId}-${artifactId}-${version}"
diff --git a/.ci/dev/publish-branch/Jenkinsfile.nightly b/.ci/dev/publish-branch/Jenkinsfile.nightly
index df7f178cac..4b331e9f5d 100644
--- a/.ci/dev/publish-branch/Jenkinsfile.nightly
+++ b/.ci/dev/publish-branch/Jenkinsfile.nightly
@@ -67,7 +67,7 @@ pipeline {
                 script {
                     sh "./gradlew --no-daemon properties | grep -E '^(version|group):' >version-properties"
                     /* every build related to Corda X.Y (GA, RC, HC, patch or snapshot) uses the same NexusIQ application */
-                    def version = sh (returnStdout: true, script: "grep ^version: version-properties | sed -e 's/^version: \\([0-9]\\+\\.[0-9]\\+\\).*\$/\\1/'").trim()
+                    def version = sh (returnStdout: true, script: "grep ^version: version-properties | sed -e 's/^version: \\([0-9]\\+\\(\\.[0-9]\\+\\)\\+\\).*\$/\\1/'").trim()
                     def groupId = sh (returnStdout: true, script: "grep ^group: version-properties | sed -e 's/^group: //'").trim()
                     def artifactId = 'corda'
                     nexusAppId = "${groupId}-${artifactId}-${version}"
diff --git a/.ci/dev/regression/Jenkinsfile b/.ci/dev/regression/Jenkinsfile
index f773438b4b..fb6e3896ff 100644
--- a/.ci/dev/regression/Jenkinsfile
+++ b/.ci/dev/regression/Jenkinsfile
@@ -100,7 +100,7 @@ pipeline {
                 script {
                     sh "./gradlew --no-daemon properties | grep -E '^(version|group):' >version-properties"
                     /* every build related to Corda X.Y (GA, RC, HC, patch or snapshot) uses the same NexusIQ application */
-                    def version = sh (returnStdout: true, script: "grep ^version: version-properties | sed -e 's/^version: \\([0-9]\\+\\.[0-9]\\+\\).*\$/\\1/'").trim()
+                    def version = sh (returnStdout: true, script: "grep ^version: version-properties | sed -e 's/^version: \\([0-9]\\+\\(\\.[0-9]\\+\\)\\+\\).*\$/\\1/'").trim()
                     def groupId = sh (returnStdout: true, script: "grep ^group: version-properties | sed -e 's/^group: //'").trim()
                     def artifactId = 'corda'
                     nexusAppId = "${groupId}-${artifactId}-${version}"
diff --git a/.github/workflows/check-pr-title.yml b/.github/workflows/check-pr-title.yml
index 2b4bab8016..ce097eb02a 100644
--- a/.github/workflows/check-pr-title.yml
+++ b/.github/workflows/check-pr-title.yml
@@ -7,8 +7,8 @@ jobs:
   check-pr-title:
     runs-on: ubuntu-latest
     steps:
-      - uses: morrisoncole/pr-lint-action@v1.1.1
+      - uses: morrisoncole/pr-lint-action@v1.4.1
         with:
-          title-regex: '^((CORDA|EG|ENT|INFRA)-\d+|NOTICK)(.*)'
+          title-regex: '^((CORDA|AG|EG|ENT|INFRA)-\d+|NOTICK)(.*)'
           on-failed-regex-comment: "PR title failed to match regex -> `%regex%`"
           repo-token: "${{ secrets.GITHUB_TOKEN }}"