diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5942c94..e76088a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,7 +75,18 @@ jobs:
           path: /var/cache/apt/archives/*.deb
           key: apt-${{ matrix.browser }}-${{ steps.apt.outputs.week }}
           restore-keys: apt-${{ matrix.browser }}-
-      - run: pnpm --filter @missing-elements/h5p-offline-player exec playwright install ${{ matrix.deps }} ${{ matrix.browser }}
+      # Playwright installs WebKit's packages through apt. Retry transient Ubuntu mirror failures.
+      - run: |
+          for attempt in 1 2 3; do
+            if pnpm --filter @missing-elements/h5p-offline-player exec playwright install ${{ matrix.deps }} ${{ matrix.browser }}; then
+              exit 0
+            fi
+            if [ "$attempt" -lt 3 ]; then
+              echo "Browser installation failed; retrying in 30 seconds ($attempt/3)."
+              sleep 30
+            fi
+          done
+          exit 1
       # Drops the versions Ubuntu has since replaced, so the cache holds one copy of each package
       # rather than every week's.
       - if: matrix.deps
diff --git a/packages/verify/package.json b/packages/verify/package.json
index 4dd5708..02a6c02 100644
--- a/packages/verify/package.json
+++ b/packages/verify/package.json
@@ -51,7 +51,7 @@
   "dependencies": {
     "@missing-elements/h5p-offline-player": "workspace:^",
     "@missing-elements/h5p-runtime": "workspace:^",
-    "playwright-core": "^1.64.1"
+    "playwright-core": "^1.65.0"
   },
   "devDependencies": {
     "@types/node": "^26.6.6",
diff --git a/packages/vscode/package.json b/packages/vscode/package.json
index 982858f..6c94789 100644
--- a/packages/vscode/package.json
+++ b/packages/vscode/package.json
@@ -137,7 +137,7 @@
     "@vscode/vsce": "^4.1.0",
     "esbuild": "^0.28.2",
     "ovsx": "^1.3.0",
-    "playwright-core": "^1.64.1",
+    "playwright-core": "^1.65.0",
     "typescript": "^7.0.2",
     "vitest": "^5.0.5"
   }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 691f762..61eda0b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -261,8 +261,8 @@ importers:
         specifier: workspace:^
         version: link:../runtime
       playwright-core:
-        specifier: ^1.64.1
-        version: 1.64.1
+        specifier: ^1.65.0
+        version: 1.65.0
     devDependencies:
       '@types/node':
         specifier: ^26.6.6
@@ -307,8 +307,8 @@ importers:
         specifier: ^1.3.0
         version: 1.3.0(@types/node@26.6.6)
       playwright-core:
-        specifier: ^1.64.1
-        version: 1.64.1
+        specifier: ^1.65.0
+        version: 1.65.0
       typescript:
         specifier: ^7.0.2
         version: 7.0.2
@@ -1881,6 +1881,11 @@ packages:
     engines: {node: '>=20'}
     hasBin: true
 
+  playwright-core@1.65.0:
+    resolution: {integrity: sha512-vNSKgH6YqtN7cdT/L334zo0a+YwkrpicyrHJlWWPIm/Q+Nn2SWInil01oT0mbu96U4GgoRtCYQD9CzJQgju+lA==}
+    engines: {node: '>=20'}
+    hasBin: true
+
   playwright@1.64.1:
     resolution: {integrity: sha512-HCrVhHr5QQuwYoswEUGTb7gGp522yflbv/ST8nF4sFWGuLjQCt17Q/EubpGGSNKYn1tsTCPZxqHhHCfVURu7UA==}
     engines: {node: '>=20'}
@@ -3593,6 +3598,8 @@ snapshots:
 
   playwright-core@1.64.1: {}
 
+  playwright-core@1.65.0: {}
+
   playwright@1.64.1:
     dependencies:
       playwright-core: 1.64.1