diff --git a/ui/src/components/UsageInstructions.tsx b/ui/src/components/UsageInstructions.tsx
index 357dea4..1791ced 100644
--- a/ui/src/components/UsageInstructions.tsx
+++ b/ui/src/components/UsageInstructions.tsx
@@ -208,6 +208,47 @@ go mod download`,
         },
       ];
 
+    case 'deb':
+      return isLocal
+        ? [
+            {
+              title: 'Add the apt repo (real apt repo, flat — Packages/Release auto-generated)',
+              language: 'bash',
+              code: `echo 'deb [trusted=yes] ${url}/api/v1/local/${name}/ ./' | sudo tee /etc/apt/sources.list.d/${name}.list
+sudo apt-get update
+sudo apt-get install <package>`,
+              note: '[trusted=yes]: artifactapi serves the flat repo unsigned (matches the rpm repo\'s gpgcheck=0). The `./` is the flat-repo suite — apt fetches Packages/Release from the repo root.',
+            },
+            {
+              title: 'Publish a .deb (index regenerates automatically)',
+              language: 'bash',
+              code: `curl -fsSL --upload-file ./my-package_1.0_amd64.deb \\
+  ${url}/api/v2/remotes/${name}/files/my-package_1.0_amd64.deb`,
+            },
+          ]
+        : [
+            {
+              title: 'Add the apt repo (caching proxy)',
+              language: 'bash',
+              code: `echo 'deb ${proxy} <suite> <component>' | sudo tee /etc/apt/sources.list.d/${name}.list
+sudo apt-get update
+sudo apt-get install <package>`,
+              note: "Signatures are verified against the upstream mirror's real signed Release through the proxy (no [trusted=yes] needed). Example suite/component: bookworm main.",
+            },
+          ];
+
+    case 'github_deb':
+      return [
+        {
+          title: 'Add the apt repo (metadata-only, from GitHub releases)',
+          language: 'bash',
+          code: `echo 'deb [trusted=yes] ${proxy}/ ./' | sudo tee /etc/apt/sources.list.d/${name}.list
+sudo apt-get update
+sudo apt-get install <package>`,
+          note: "The apt index is synthesized from the configured GitHub repo's release .deb assets; package downloads are redirected to the backing releases remote. Served unsigned, so [trusted=yes].",
+        },
+      ];
+
     case 'generic':
     default:
       return [