diff --git a/src/serious_python/example/bridge_example/pubspec.yaml b/src/serious_python/example/bridge_example/pubspec.yaml
index 23133af7..fd4e23bb 100644
--- a/src/serious_python/example/bridge_example/pubspec.yaml
+++ b/src/serious_python/example/bridge_example/pubspec.yaml
@@ -24,5 +24,14 @@ dev_dependencies:
     sdk: flutter
   flutter_lints: ^2.0.0
 
+# jni arrives transitively (path_provider -> path_provider_android ->
+# jni_flutter -> jni). 1.0.1 added global_jni_env.c, which passes a `va_list`
+# where a `void *` is expected: fine on x86_64, where va_list is an array type
+# that decays to a pointer, but a hard error on aarch64, where it's a struct.
+# That breaks `flutter build linux` on ARM64 hosts. Tracked upstream at
+# dart-lang/native#3498 — drop this override once a fixed jni is released.
+dependency_overrides:
+  jni: 1.0.0
+
 flutter:
   uses-material-design: true
diff --git a/src/serious_python/example/flask_example/pubspec.lock b/src/serious_python/example/flask_example/pubspec.lock
index a0c8b512..921d732a 100644
--- a/src/serious_python/example/flask_example/pubspec.lock
+++ b/src/serious_python/example/flask_example/pubspec.lock
@@ -156,7 +156,7 @@ packages:
     source: hosted
     version: "4.1.2"
   jni:
-    dependency: transitive
+    dependency: "direct overridden"
     description:
       name: jni
       sha256: c2230682d5bc2362c1c9e8d3c7f406d9cbba23ab3f2e203a025dd47e0fb2e68f
@@ -361,42 +361,42 @@ packages:
       path: "../.."
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_android:
     dependency: transitive
     description:
       path: "../../../serious_python_android"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_darwin:
     dependency: transitive
     description:
       path: "../../../serious_python_darwin"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_linux:
     dependency: transitive
     description:
       path: "../../../serious_python_linux"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_platform_interface:
     dependency: transitive
     description:
       path: "../../../serious_python_platform_interface"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_windows:
     dependency: transitive
     description:
       path: "../../../serious_python_windows"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   shelf:
     dependency: transitive
     description:
diff --git a/src/serious_python/example/flask_example/pubspec.yaml b/src/serious_python/example/flask_example/pubspec.yaml
index 47da6963..23df2097 100644
--- a/src/serious_python/example/flask_example/pubspec.yaml
+++ b/src/serious_python/example/flask_example/pubspec.yaml
@@ -56,6 +56,15 @@ dev_dependencies:
 # following page: https://dart.dev/tools/pub/pubspec
 
 # The following section is specific to Flutter packages.
+# jni arrives transitively (path_provider -> path_provider_android ->
+# jni_flutter -> jni). 1.0.1 added global_jni_env.c, which passes a `va_list`
+# where a `void *` is expected: fine on x86_64, where va_list is an array type
+# that decays to a pointer, but a hard error on aarch64, where it's a struct.
+# That breaks `flutter build linux` on ARM64 hosts. Tracked upstream at
+# dart-lang/native#3498 — drop this override once a fixed jni is released.
+dependency_overrides:
+  jni: 1.0.0
+
 flutter:
 
   # The following line ensures that the Material Icons font is
diff --git a/src/serious_python/example/run_example/pubspec.lock b/src/serious_python/example/run_example/pubspec.lock
index 6d374be4..21ba23f7 100644
--- a/src/serious_python/example/run_example/pubspec.lock
+++ b/src/serious_python/example/run_example/pubspec.lock
@@ -171,7 +171,7 @@ packages:
     source: sdk
     version: "0.0.0"
   jni:
-    dependency: transitive
+    dependency: "direct overridden"
     description:
       name: jni
       sha256: c2230682d5bc2362c1c9e8d3c7f406d9cbba23ab3f2e203a025dd47e0fb2e68f
@@ -384,42 +384,42 @@ packages:
       path: "../.."
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_android:
     dependency: transitive
     description:
       path: "../../../serious_python_android"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_darwin:
     dependency: transitive
     description:
       path: "../../../serious_python_darwin"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_linux:
     dependency: transitive
     description:
       path: "../../../serious_python_linux"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_platform_interface:
     dependency: transitive
     description:
       path: "../../../serious_python_platform_interface"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   serious_python_windows:
     dependency: transitive
     description:
       path: "../../../serious_python_windows"
       relative: true
     source: path
-    version: "4.0.0"
+    version: "4.4.1"
   shelf:
     dependency: transitive
     description:
diff --git a/src/serious_python/example/run_example/pubspec.yaml b/src/serious_python/example/run_example/pubspec.yaml
index 3035fb7e..5e3c3c30 100644
--- a/src/serious_python/example/run_example/pubspec.yaml
+++ b/src/serious_python/example/run_example/pubspec.yaml
@@ -58,6 +58,15 @@ dev_dependencies:
 # following page: https://dart.dev/tools/pub/pubspec
 
 # The following section is specific to Flutter packages.
+# jni arrives transitively (path_provider -> path_provider_android ->
+# jni_flutter -> jni). 1.0.1 added global_jni_env.c, which passes a `va_list`
+# where a `void *` is expected: fine on x86_64, where va_list is an array type
+# that decays to a pointer, but a hard error on aarch64, where it's a struct.
+# That breaks `flutter build linux` on ARM64 hosts. Tracked upstream at
+# dart-lang/native#3498 — drop this override once a fixed jni is released.
+dependency_overrides:
+  jni: 1.0.0
+
 flutter:
 
   # The following line ensures that the Material Icons font is