diff --git a/lib/core/runtime/AvenxComponent.js b/lib/core/runtime/AvenxComponent.js
index 9939db5..766b367 100644
--- a/lib/core/runtime/AvenxComponent.js
+++ b/lib/core/runtime/AvenxComponent.js
@@ -14,7 +14,7 @@ import { queueJob, nextTick as schedulerNextTick } from '../reactive/scheduler.j
 import { AvenxSandbox } from '../security/sandbox.js';
 
 import { AvenxWatcher } from '../reactive/watcher.js';
-import { ProxyHandlerFactory } from '../reactive/proxyHandler.js';
+import { ProxyHandlerFactory, RAW_SYMBOL } from '../reactive/proxyHandler.js';
 import { processBindDirectives } from '../utils/templateUtils.js';
 import { profile } from '../utils/profiler.js';
 
@@ -436,6 +436,8 @@ export class AvenxComponent {
         this.#triggerLifecycle('onBeforeUpdate');
       }
 
+      this.__updateProvidedState();
+
       this.#patcher.patch(this.#element, this.render(), (expression, slotScope) => this.#resolveTemplateExpression(expression, slotScope), this.$app);
 
       // Fill slots with transcluded content.
@@ -454,6 +456,8 @@ export class AvenxComponent {
       if (this.#isMounted) {
         this.#triggerLifecycle('onUpdate');
       }
+
+      this.__notifyInjectingChildren();
     } finally {
       this.#isUpdating = false;
     }
@@ -892,6 +896,13 @@ export class AvenxComponent {
       this.renderWatcher.teardown();
     }
 
+    if (this._injectedAncestors) {
+      for (const { ancestor, key } of this._injectedAncestors) {
+        ancestor.__unregisterInjectingChild(key, this);
+      }
+      this._injectedAncestors = [];
+    }
+
     if (this._watchers) {
       for (const watcher of this._watchers) {
         watcher.teardown();
@@ -1032,6 +1043,18 @@ export class AvenxComponent {
             );
             return undefined;
           }
+
+          if (!this._injectedAncestors) {
+            this._injectedAncestors = [];
+          }
+          const alreadyRegistered = this._injectedAncestors.some(
+            (reg) => reg.ancestor === ancestor && reg.key === provideKey
+          );
+          if (!alreadyRegistered) {
+            ancestor.__registerInjectingChild(provideKey, this);
+            this._injectedAncestors.push({ ancestor, key: provideKey });
+          }
+
           return this.#getAncestorProvidedValue(ancestor, provideKey);
         },
         enumerable: true,
@@ -1136,13 +1159,78 @@ export class AvenxComponent {
       // Create a reactive proxy of the provided object
       const handlerFactory = new ProxyHandlerFactory({
         onChange: () => {
-          // Do not call scheduleUpdate of this component
+          this.__notifyInjectingChildren();
         },
       });
       this._providedState = new Proxy(resolved, handlerFactory.create());
     }
   }
 
+  /**
+   * Registers a child component that is injecting a provided key.
+   * @param {string} key - The provided key.
+   * @param {AvenxComponent} child - The child component.
+   */
+  __registerInjectingChild(key, child) {
+    if (!this._injectingChildren) {
+      this._injectingChildren = new Map();
+    }
+    let children = this._injectingChildren.get(key);
+    if (!children) {
+      children = new Set();
+      this._injectingChildren.set(key, children);
+    }
+    children.add(child);
+  }
+
+  /**
+   * Unregisters an injecting child component.
+   * @param {string} key - The provided key.
+   * @param {AvenxComponent} child - The child component.
+   */
+  __unregisterInjectingChild(key, child) {
+    if (this._injectingChildren) {
+      const children = this._injectingChildren.get(key);
+      if (children) {
+        children.delete(child);
+      }
+    }
+  }
+
+  /**
+   * Notifies all registered injecting child components that a provided value has shifted.
+   */
+  __notifyInjectingChildren() {
+    if (this._injectingChildren) {
+      for (const children of this._injectingChildren.values()) {
+        for (const child of children) {
+          child.scheduleUpdate();
+        }
+      }
+    }
+  }
+
+  /**
+   * Dynamically re-evaluates the provide option and updates providedState.
+   */
+  __updateProvidedState() {
+    if (!this._providedState) return;
+    const provideOption =
+      this.provide ||
+      (typeof this.constructor.provide === 'function' ? this.constructor.provide() : this.constructor.provide);
+    if (!provideOption) return;
+
+    const resolved = typeof provideOption === 'function' ? provideOption.call(this) : provideOption;
+    if (resolved && typeof resolved === 'object' && !Array.isArray(resolved)) {
+      const rawProvided = this._providedState[RAW_SYMBOL] || this._providedState;
+      for (const [k, v] of Object.entries(resolved)) {
+        if (rawProvided[k] !== v) {
+          this._providedState[k] = v;
+        }
+      }
+    }
+  }
+
   /**
    * Retrieves a property or method from the component's scope.
    * Used for array-based provide to resolve keys dynamically.
diff --git a/test/integration/provide_inject.test.js b/test/integration/provide_inject.test.js
index af1c993..347be9a 100644
--- a/test/integration/provide_inject.test.js
+++ b/test/integration/provide_inject.test.js
@@ -627,6 +627,71 @@ global.requestAnimationFrame = (cb) => {
 
     console.log('  ✅ Nested scopes and shadowing tests passed!');
 
+    // -------------------------------------------------------------------------
+    // Test Case 4: Reactive Provide/Inject Dependency Updates (Primitive Reassignment)
+    // -------------------------------------------------------------------------
+    console.log('  4. Testing reactive provide / inject dependency updates with primitive reassignment...');
+
+    let reactiveChildRenders = 0;
+
+    class ReactiveChildComp extends AvenxComponent {
+      constructor(bridges, props) {
+        super({}, {}, bridges, '<div>Child Theme: {{ theme }}</div>', {}, props);
+      }
+      runUpdate() {
+        reactiveChildRenders++;
+        super.runUpdate();
+      }
+    }
+    ReactiveChildComp.inject = ['theme'];
+
+    class ReactiveParentPage extends AvenxPage {
+      constructor(bridges, registry) {
+        super(
+          { parentTheme: 'initial-dark' },
+          {},
+          bridges,
+          '<div>' + '  <ReactiveChildComp data-avenx-comp="ReactiveChildComp"></ReactiveChildComp>' + '</div>',
+          {},
+          registry,
+        );
+      }
+      provide() {
+        return {
+          theme: this.state.parentTheme,
+        };
+      }
+    }
+
+    const registry4 = new Map();
+    registry4.set('ReactiveChildComp', ReactiveChildComp);
+
+    testRootElement.innerHTML = '';
+    const parentPage4 = new ReactiveParentPage({}, registry4);
+    parentPage4.mount(testRootElement);
+
+    await new Promise((resolve) => setTimeout(resolve, 10));
+
+    const childEl4 = testRootElement.querySelector('[data-avenx-comp="ReactiveChildComp"]');
+    assert.ok(childEl4, 'Child component should be mounted in the DOM');
+    const childInstance4 = childEl4.__avenx_comp_instance;
+    assert.ok(childInstance4, 'Child component instance should be cached on element');
+
+    assert.strictEqual(childInstance4.theme, 'initial-dark', 'Child should inject initial theme');
+    assert.strictEqual(childEl4.textContent.trim(), 'Child Theme: initial-dark');
+    assert.strictEqual(reactiveChildRenders, 1, 'Child should have rendered once');
+
+    // Mutate parent state. Since parentTheme shifts, it should trigger child update check
+    parentPage4.state.parentTheme = 'new-light';
+
+    await new Promise((resolve) => setTimeout(resolve, 50));
+
+    assert.strictEqual(childInstance4.theme, 'new-light', 'Child injected theme should update reactively');
+    assert.strictEqual(childEl4.textContent.trim(), 'Child Theme: new-light', 'Child template should render updated value');
+    assert.strictEqual(reactiveChildRenders, 2, 'Child component should have rendered a second time');
+
+    console.log('  ✅ Reactive Provide/Inject updates tests passed!');
+
     console.log('✅ Provide / Inject Integration Tests successfully completed!');
     process.exit(0);
   } catch (error) {