diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 60d4f7a..ea0f7b8 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -69,6 +69,9 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
 
+      - name: Remove phpspec
+        run: composer remove --dev friends-of-phpspec/phpspec-code-coverage phpspec/phpspec
+
       - name: PHPStan
         uses: OskarStark/phpstan-ga@0.12.32
         env:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a10d4e9..cdbf39c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,14 @@
 # Change Log
 
-## 1.2.1
+## 1.2.2 - unreleased
 
-### Added - 2023-11-08
+### Fixed
+
+- Changed `Promise` to use a template for the exception class that is allowed.
+
+## 1.2.1 - 2023-11-08
+
+### Fixed
 
 - Fixed PHPDoc for `wait()` and `then()`'s `onRejected` callable
 
diff --git a/src/Promise.php b/src/Promise.php
index 81434ae..7935fbc 100644
--- a/src/Promise.php
+++ b/src/Promise.php
@@ -14,6 +14,8 @@
  * @author Márk Sági-Kazár <mark.sagikazar@gmail.com>
  *
  * @template-covariant T
+ *
+ * @template E of \Throwable
  */
 interface Promise
 {
@@ -38,10 +40,10 @@ interface Promise
      * If you do not care about one of the cases, you can set the corresponding callable to null
      * The callback will be called when the value arrived and never more than once.
      *
-     * @param callable(T): V|null          $onFulfilled called when a response will be available
-     * @param callable(\Throwable): V|null $onRejected  called when an exception occurs
+     * @param callable(T): V|null $onFulfilled called when a response will be available
+     * @param callable(E): V|null $onRejected  called when an exception occurs
      *
-     * @return Promise<V> a new resolved promise with value of the executed callback (onFulfilled / onRejected)
+     * @return Promise<V, E> a new resolved promise with value of the executed callback (onFulfilled / onRejected)
      *
      * @template V
      */
@@ -67,7 +69,7 @@ public function getState();
      *
      * @return ($unwrap is true ? T : null) Resolved value, null if $unwrap is set to false
      *
-     * @throws \Exception the rejection reason if $unwrap is set to true and the request failed
+     * @throws E the rejection reason if $unwrap is set to true and the request failed
      */
     public function wait($unwrap = true);
 }