diff --git a/pkgs/istio/istio/istioctl/registry.yaml b/pkgs/istio/istio/istioctl/registry.yaml
index cc58a92e7ff..5d9e2ed4c02 100644
--- a/pkgs/istio/istio/istioctl/registry.yaml
+++ b/pkgs/istio/istio/istioctl/registry.yaml
@@ -4,12 +4,16 @@ packages:
     repo_owner: istio
     repo_name: istio
     description: The istioctl tool is a configuration command line utility that allows service operators to debug and diagnose their Istio service mesh deployments
+    supported_if: not (GOOS == "windows" and GOARCH == "arm64")
     replacements:
       darwin: osx
+      windows: win
     asset: "istioctl-{{.Version}}-{{.OS}}-{{.Arch}}.tar.gz"
+    files:
+      - name: istioctl
     overrides:
       - goos: darwin
         goarch: amd64
         asset: "istioctl-{{.Version}}-osx.tar.gz"
-    files:
-      - name: istioctl
+      - goos: windows
+        asset: "istioctl-{{.Version}}-win.zip"
diff --git a/registry.json b/registry.json
index 5dab5de4f05..8bf91c4b058 100644
--- a/registry.json
+++ b/registry.json
@@ -4715,13 +4715,19 @@
           "asset": "istioctl-{{.Version}}-osx.tar.gz",
           "goarch": "amd64",
           "goos": "darwin"
+        },
+        {
+          "asset": "istioctl-{{.Version}}-win.zip",
+          "goos": "windows"
         }
       ],
       "replacements": {
-        "darwin": "osx"
+        "darwin": "osx",
+        "windows": "win"
       },
       "repo_name": "istio",
       "repo_owner": "istio",
+      "supported_if": "not (GOOS == \"windows\" and GOARCH == \"arm64\")",
       "type": "github_release"
     },
     {
diff --git a/registry.yaml b/registry.yaml
index cbc7bf4aa1a..ee76f2b9c46 100644
--- a/registry.yaml
+++ b/registry.yaml
@@ -3121,15 +3121,19 @@ packages:
     repo_owner: istio
     repo_name: istio
     description: The istioctl tool is a configuration command line utility that allows service operators to debug and diagnose their Istio service mesh deployments
+    supported_if: not (GOOS == "windows" and GOARCH == "arm64")
     replacements:
       darwin: osx
+      windows: win
     asset: "istioctl-{{.Version}}-{{.OS}}-{{.Arch}}.tar.gz"
+    files:
+      - name: istioctl
     overrides:
       - goos: darwin
         goarch: amd64
         asset: "istioctl-{{.Version}}-osx.tar.gz"
-    files:
-      - name: istioctl
+      - goos: windows
+        asset: "istioctl-{{.Version}}-win.zip"
   - type: github_release
     repo_owner: itchyny
     repo_name: gojq