diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 46acd6b5e..dce79fb33 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -25,11 +25,11 @@ jobs:
     name: Documentation check
     runs-on: ubuntu-latest
     container:
-      image: 'swift:6.2-noble'
+      image: 'swift:6.3-noble'
     strategy:
       fail-fast: true
       matrix:
-        swift_version: ['6.2']
+        swift_version: ['6.3']
         os_version: ['jammy']
         jdk_vendor: ['corretto']
     steps:
@@ -47,7 +47,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        swift_version: ['6.2', 'nightly']
+        swift_version: ['6.2', '6.3', 'nightly']
         os_version: ['jammy']
         jdk_vendor: ['corretto']
     container:
@@ -73,7 +73,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        swift_version: ['6.2']
+        swift_version: ['6.2', '6.3']
         os_version: ['macos']
         jdk_vendor: ['corretto']
     env:
@@ -97,7 +97,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        swift_version: ['6.2']
+        swift_version: ['6.3']
         os_version: ['jammy']
         jdk_vendor: ['corretto']
     container:
@@ -117,7 +117,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        swift_version: ['6.2']
+        swift_version: ['6.3']
         os_version: ['jammy']
         jdk_vendor: ['corretto']
     container:
@@ -139,7 +139,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift_version: ['6.1.3', '6.2', 'nightly']
+        swift_version: ['6.1.3', '6.2', '6.3', 'nightly']
         os_version: ['jammy']
         jdk_vendor: ['corretto']
     container:
@@ -163,7 +163,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift_version: ['6.2.3']
+        swift_version: ['6.2.3', '6.3']
         os_version: ['macos']
         jdk_vendor: ['corretto']
     env:
@@ -213,7 +213,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift_version: ['6.1.3', '6.2', 'nightly']
+        swift_version: ['6.1.3', '6.2', '6.3', 'nightly']
         os_version: ['jammy']
         jdk_vendor: ['corretto']
         sample_app: [  # TODO: use a reusable-workflow to generate those names
@@ -241,7 +241,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift_version: ['6.2']  # no nightly testing on macOS
+        swift_version: ['6.2', '6.3']  # no nightly testing on macOS
         os_version: ['macos']
         jdk_vendor: ['corretto']
         sample_app: [  # TODO: use a reusable-workflow to generate those names
@@ -265,14 +265,14 @@ jobs:
         run: .github/scripts/validate_sample.sh Samples/${{ matrix.sample_app }}
 
   linkage-test:
-    name: Linkage test (jammy swift:6.2)
+    name: Linkage test (jammy swift:6.3)
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         jdk_vendor: ['corretto']
     container:
-      image: swift:6.2-jammy
+      image: swift:6.3-jammy
     steps:
       - uses: actions/checkout@v6
       - name: Prepare CI Environment