diff --git a/.github/workflows/32-bit-linux.yml b/.github/workflows/32-bit-linux.yml
index 67e99b4486a12..8c9f0b594f321 100644
--- a/.github/workflows/32-bit-linux.yml
+++ b/.github/workflows/32-bit-linux.yml
@@ -4,10 +4,12 @@ on:
   push:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
   pull_request:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
     paths-ignore:
       - "doc/**"
diff --git a/.github/workflows/code-checks.yml b/.github/workflows/code-checks.yml
index 09c603f347d4c..c9c5058fb365c 100644
--- a/.github/workflows/code-checks.yml
+++ b/.github/workflows/code-checks.yml
@@ -4,10 +4,12 @@ on:
   push:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
   pull_request:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
 
 env:
diff --git a/.github/workflows/docbuild-and-upload.yml b/.github/workflows/docbuild-and-upload.yml
index 76855b6b9f2b9..5ad146eccb253 100644
--- a/.github/workflows/docbuild-and-upload.yml
+++ b/.github/workflows/docbuild-and-upload.yml
@@ -4,12 +4,14 @@ on:
   push:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
     tags:
       - '*'
   pull_request:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
 
 env:
diff --git a/.github/workflows/macos-windows.yml b/.github/workflows/macos-windows.yml
index e9503a2486560..9cbd41917110e 100644
--- a/.github/workflows/macos-windows.yml
+++ b/.github/workflows/macos-windows.yml
@@ -4,10 +4,12 @@ on:
   push:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
   pull_request:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
     paths-ignore:
       - "doc/**"
diff --git a/.github/workflows/python-dev.yml b/.github/workflows/python-dev.yml
index 580cafd6e4949..46cb564b494f6 100644
--- a/.github/workflows/python-dev.yml
+++ b/.github/workflows/python-dev.yml
@@ -24,10 +24,12 @@ on:
   push:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
   pull_request:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
     paths-ignore:
       - "doc/**"
diff --git a/.github/workflows/sdist.yml b/.github/workflows/sdist.yml
index 1a06ea31ccbb8..14cede7bc1a39 100644
--- a/.github/workflows/sdist.yml
+++ b/.github/workflows/sdist.yml
@@ -4,10 +4,12 @@ on:
   push:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
   pull_request:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
     types: [labeled, opened, synchronize, reopened]
     paths-ignore:
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index b8268a82d9b70..301e7804ddbd8 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -4,10 +4,12 @@ on:
   push:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
   pull_request:
     branches:
       - main
+      - 1.5.x
       - 1.4.x
     paths-ignore:
       - "doc/**"