diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90988b47..52831eae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@
 - Enh #356: Improve usage `NotFoundException` for cases with definitions (@vjik)
 - Enh #364: Minor refactoring to improve performance of container (@samdark)
 - Enh #375: Raise minimum PHP version to `^8.1` and refactor code (@vjik)
+- Enh #376: Add default value `true` for parameter of `ContainerConfig::withStrictMode()` and
+ `ContainerConfig::withValidate()` methods (@vjik)
 
 ## 1.2.1 December 23, 2022
 
diff --git a/src/ContainerConfig.php b/src/ContainerConfig.php
index 7995bac2..daeca35f 100644
--- a/src/ContainerConfig.php
+++ b/src/ContainerConfig.php
@@ -73,7 +73,7 @@ public function getTags(): array
     /**
      * @param bool $validate Whether definitions should be validated immediately.
      */
-    public function withValidate(bool $validate): self
+    public function withValidate(bool $validate = true): self
     {
         $new = clone $this;
         $new->validate = $validate;
@@ -106,7 +106,7 @@ public function getDelegates(): array
      * @param bool $useStrictMode If the automatic addition of definition when class exists and can be resolved
      * is disabled.
      */
-    public function withStrictMode(bool $useStrictMode): self
+    public function withStrictMode(bool $useStrictMode = true): self
     {
         $new = clone $this;
         $new->useStrictMode = $useStrictMode;