diff --git a/authui/README.md b/authui/README.md
index de5789088c..2e03e36e78 100644
--- a/authui/README.md
+++ b/authui/README.md
@@ -9,3 +9,11 @@ make generate-material-icons
 ```
 
 After that, commit the changes in `scripts/python/material-icons.txt`, `authui/src/authflowv2/icons/material-symbols-outlined-subset.ttf` and `authui/src/authflowv2/icons/material-symbols-outlined-subset.woff2`.
+
+### @metamask/jazzicon
+
+In oursky/authgear-server, the connection to the URL `https://codeload.github.com/MetaMask/jazzicon/tar.gz/4fe23bbbe5088e128cb24082972e28d87e76d156` fails very often.
+Therefore, we download the tarball, and use it directly.
+We also updated to the latest commit.
+See https://github.com/MetaMask/jazzicon/compare/d923914fda6a8795f74c2e66134f73cd72070667..4fe23bbbe5088e128cb24082972e28d87e76d156 for the changes.
+The changes DO NOT cover runtime behavior changes, so it is safe to upgrade.
diff --git a/authui/package-lock.json b/authui/package-lock.json
index 5dc6e0c8cb..6167e25331 100644
--- a/authui/package-lock.json
+++ b/authui/package-lock.json
@@ -13,7 +13,7 @@
         "@hotwired/stimulus": "3.2.2",
         "@hotwired/turbo": "7.3.0",
         "@metamask/detect-provider": "2.0.0",
-        "@metamask/jazzicon": "github:MetaMask/jazzicon#d923914fda6a8795f74c2e66134f73cd72070667",
+        "@metamask/jazzicon": "file:tarballs/jazzicon-4fe23bbbe5088e128cb24082972e28d87e76d156.tar.gz",
         "@sentry/browser": "7.80.0",
         "@sentry/tracing": "7.80.0",
         "@tabler/icons": "1.107.0",
@@ -2238,12 +2238,15 @@
       }
     },
     "node_modules/@metamask/jazzicon": {
-      "version": "2.1.0",
-      "resolved": "git+ssh://git@github.com/MetaMask/jazzicon.git#d923914fda6a8795f74c2e66134f73cd72070667",
-      "integrity": "sha512-XPeeSbhfL8TW2wjsJ0ayDh/KrWqd4IU6iPWZcMvY4SSYLJnP1rEXB4GMYoBLO35s9BrGwZH1eh0FmTs9QNA0gg==",
+      "version": "2.0.0",
+      "resolved": "file:tarballs/jazzicon-4fe23bbbe5088e128cb24082972e28d87e76d156.tar.gz",
+      "integrity": "sha512-MRAS16noz1VASRr3rwPTVXZzlnQhijR01Ty2PQtzkCr32p0vo6x4doEW/IjnjThK/l3tGuBycZS9PHqkMxVTeQ==",
       "license": "ISC",
       "dependencies": {
         "mersenne-twister": "^1.1.0"
+      },
+      "engines": {
+        "node": "^18.16 || >=20"
       }
     },
     "node_modules/@microsoft/tsdoc": {
@@ -16105,9 +16108,8 @@
       "integrity": "sha512-sFpN+TX13E9fdBDh9lvQeZdJn4qYoRb/6QF2oZZK/Pn559IhCFacPMU1rMuqyXoFQF3JSJfii2l98B87QDPeCQ=="
     },
     "@metamask/jazzicon": {
-      "version": "git+ssh://git@github.com/MetaMask/jazzicon.git#d923914fda6a8795f74c2e66134f73cd72070667",
-      "integrity": "sha512-XPeeSbhfL8TW2wjsJ0ayDh/KrWqd4IU6iPWZcMvY4SSYLJnP1rEXB4GMYoBLO35s9BrGwZH1eh0FmTs9QNA0gg==",
-      "from": "@metamask/jazzicon@github:MetaMask/jazzicon#d923914fda6a8795f74c2e66134f73cd72070667",
+      "version": "file:tarballs/jazzicon-4fe23bbbe5088e128cb24082972e28d87e76d156.tar.gz",
+      "integrity": "sha512-MRAS16noz1VASRr3rwPTVXZzlnQhijR01Ty2PQtzkCr32p0vo6x4doEW/IjnjThK/l3tGuBycZS9PHqkMxVTeQ==",
       "requires": {
         "mersenne-twister": "^1.1.0"
       }
diff --git a/authui/package.json b/authui/package.json
index 6b89427f8a..2415d8712e 100644
--- a/authui/package.json
+++ b/authui/package.json
@@ -59,7 +59,7 @@
     "@hotwired/stimulus": "3.2.2",
     "@hotwired/turbo": "7.3.0",
     "@metamask/detect-provider": "2.0.0",
-    "@metamask/jazzicon": "github:MetaMask/jazzicon#d923914fda6a8795f74c2e66134f73cd72070667",
+    "@metamask/jazzicon": "file:tarballs/jazzicon-4fe23bbbe5088e128cb24082972e28d87e76d156.tar.gz",
     "@sentry/browser": "7.80.0",
     "@sentry/tracing": "7.80.0",
     "@tabler/icons": "1.107.0",
diff --git a/authui/tarballs/jazzicon-4fe23bbbe5088e128cb24082972e28d87e76d156.tar.gz b/authui/tarballs/jazzicon-4fe23bbbe5088e128cb24082972e28d87e76d156.tar.gz
new file mode 100644
index 0000000000..0b44d79658
Binary files /dev/null and b/authui/tarballs/jazzicon-4fe23bbbe5088e128cb24082972e28d87e76d156.tar.gz differ
diff --git a/cmd/authgear/Dockerfile b/cmd/authgear/Dockerfile
index 250711edfa..5277cca7d4 100644
--- a/cmd/authgear/Dockerfile
+++ b/cmd/authgear/Dockerfile
@@ -27,6 +27,8 @@ WORKDIR /usr/src/app
 COPY ./scripts/npm/package.json ./scripts/npm/package-lock.json ./scripts/npm/
 RUN cd ./scripts/npm && npm ci
 COPY ./authui/package.json ./authui/package-lock.json ./authui/
+# See /authui/README.md for the reason why we need to copy tarballs.
+COPY ./authui/tarballs/. ./authui/tarballs/.
 RUN cd ./authui && npm ci
 COPY . .
 RUN make authui GIT_HASH=$GIT_HASH
diff --git a/cmd/portal/Dockerfile b/cmd/portal/Dockerfile
index f14b64572f..87d2280c82 100644
--- a/cmd/portal/Dockerfile
+++ b/cmd/portal/Dockerfile
@@ -27,6 +27,8 @@ WORKDIR /usr/src/app
 COPY ./scripts/npm/package.json ./scripts/npm/package-lock.json ./scripts/npm/
 RUN cd ./scripts/npm && npm ci
 COPY ./authui/package.json ./authui/package-lock.json ./authui/
+# See /authui/README.md for the reason why we need to copy tarballs.
+COPY ./authui/tarballs/. ./authui/tarballs/.
 RUN cd ./authui && npm ci
 COPY . .
 RUN make authui GIT_HASH=$GIT_HASH
diff --git a/custombuild/cmd/authgearx/Dockerfile b/custombuild/cmd/authgearx/Dockerfile
index d889a16bb5..9adc1084b0 100644
--- a/custombuild/cmd/authgearx/Dockerfile
+++ b/custombuild/cmd/authgearx/Dockerfile
@@ -45,6 +45,8 @@ WORKDIR /usr/src/app
 COPY ./scripts/npm/package.json ./scripts/npm/package-lock.json ./scripts/npm/
 RUN cd ./scripts/npm && npm ci
 COPY ./authui/package.json ./authui/package-lock.json ./authui/
+# See /authui/README.md for the reason why we need to copy tarballs.
+COPY ./authui/tarballs/. ./authui/tarballs/.
 RUN cd ./authui && npm ci
 COPY . .
 RUN make authui GIT_HASH=$GIT_HASH
diff --git a/custombuild/cmd/portalx/Dockerfile b/custombuild/cmd/portalx/Dockerfile
index cf67743599..47cdbae582 100644
--- a/custombuild/cmd/portalx/Dockerfile
+++ b/custombuild/cmd/portalx/Dockerfile
@@ -45,6 +45,8 @@ WORKDIR /usr/src/app
 COPY ./scripts/npm/package.json ./scripts/npm/package-lock.json ./scripts/npm/
 RUN cd ./scripts/npm && npm ci
 COPY ./authui/package.json ./authui/package-lock.json ./authui/
+# See /authui/README.md for the reason why we need to copy tarballs.
+COPY ./authui/tarballs/. ./authui/tarballs/.
 RUN cd ./authui && npm ci
 COPY . .
 RUN make authui GIT_HASH=$GIT_HASH