diff --git a/.changeset/5753-providers-drop-spec-dep.md b/.changeset/5753-providers-drop-spec-dep.md
new file mode 100644
index 0000000000..eb0756fe59
--- /dev/null
+++ b/.changeset/5753-providers-drop-spec-dep.md
@@ -0,0 +1,28 @@
+---
+'@object-ui/providers': patch
+---
+
+`@object-ui/providers` no longer declares `@objectstack/spec` as a dependency. Nothing
+in the package imports it, so consumers stop installing it on this package's account
+(objectui#5753).
+
+The edge was live for exactly one release cycle. It was promoted from `devDependencies`
+to `dependencies` when `ThemePreference` was derived from the spec's `ThemeMode` union,
+because the package's public `.d.ts` then referenced the spec. objectui#5716 re-pointed
+that derivation at `@object-ui/types` (`ThemeMode` / `THEME_MODES`), which removed the
+last three import sites — `src/types.ts` and the two retirement-era test files — and
+left the declaration behind with no reader.
+
+Re-measured on `origin/main` at `ad0f5f11f` before removal, with a positive control so
+the empty result is a real absence rather than a broken command: the import-shaped grep
+(`from` / `require(` / `import(` / `vi.mock(` against `@objectstack/spec`, bare name and
+every subpath) returns **0** hits under `packages/providers/` and **434** across
+`packages/` + `apps/` — same command, same invocation. The only surviving mentions in
+the package are the declaration itself, immutable `CHANGELOG.md` history, and a prose
+comment in `tsconfig.test.json` that this change corrects.
+
+No API change and no behaviour change: `dist/types.d.ts` imports only `react` and
+`@object-ui/types`, and no emitted file references a spec symbol. Consumers on an
+isolated `node_modules` (pnpm) never had supported access to the spec through this
+package, so nothing they could legitimately import goes away — the change is to the
+install graph only, which is why it is scored `patch` rather than `minor`.
diff --git a/packages/providers/package.json b/packages/providers/package.json
index 8f4c97516c..2c698bed77 100644
--- a/packages/providers/package.json
+++ b/packages/providers/package.json
@@ -30,8 +30,7 @@
     "lint": "eslint ."
   },
   "dependencies": {
-    "@object-ui/types": "workspace:*",
-    "@objectstack/spec": "^17.0.0"
+    "@object-ui/types": "workspace:*"
   },
   "peerDependencies": {
     "react": "^18.0.0 || ^19.0.0",
diff --git a/packages/providers/tsconfig.test.json b/packages/providers/tsconfig.test.json
index 1edf1cd83f..b1db1dad27 100644
--- a/packages/providers/tsconfig.test.json
+++ b/packages/providers/tsconfig.test.json
@@ -9,9 +9,9 @@
     // The package build emits `dist`; this project emits nothing, so it must
     // not inherit `composite` / `declaration` from the build config.
     "composite": false,
-    // Drop the root tsconfig's source-tree `paths` so `@object-ui/*` and
-    // `@objectstack/spec` resolve through the workspace dependency's built
-    // `.d.ts` instead of pulling sibling sources in as program inputs (TS6059).
+    // Drop the root tsconfig's source-tree `paths` so `@object-ui/*` resolves
+    // through the workspace dependency's built `.d.ts` instead of pulling
+    // sibling sources in as program inputs (TS6059).
     "paths": {}
   },
   "include": ["src/**/*.test.ts", "src/**/*.test.tsx"]
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index deb53ec2fe..2f3855c124 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -2656,9 +2656,6 @@ importers:
       '@object-ui/types':
         specifier: workspace:*
         version: link:../types
-      '@objectstack/spec':
-        specifier: ^17.0.0
-        version: 17.2.0(ai@7.0.65(zod@4.4.3))
       react:
         specifier: 19.2.8
         version: 19.2.8