diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b15cb9..6dc4af3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,16 @@
 # Change Log
+## v1.3.1
+> Starting from v1.3, to support auto-detection on Civitai, `calculate_model_hash` will be renamed as 
+> `calculate_hash` and it will be enabled by default. Due to the addition of temporary storage of the model hash values,
+> the first image generated after switching to the new model will take more time to calculate the hash value, 
+> but it will not affect the generation speed afterwards until the server is restarted.
+
+- Add user-friendly warnings and remove the exception raised during the reading of metadata #58 #63
+- Add JPEG to the image extension list
+- Fix the issue where the `Prompt Saver` node cannot consume filename from another `Prompt Saver` node #62
+- Fix the `Prompt Saver` node freezes workflow when name includes `%model` #61
+- Remove ckpt validation of the `Prompt Reader` node #59
+
 ## v1.3.0
 > Starting from this version, to support auto-detection on Civitai, `calculate_model_hash` will be renamed as 
 > `calculate_hash` and it will be enabled by default. Due to the addition of temporary storage of the model hash values,
diff --git a/README.md b/README.md
index b014bf1..17b9fa1 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,8 @@ the `Prompt Saver` Node and `KSampler` Node.
 <details>
     <summary><b>More Information</b></summary>
 
+#### Image Format
+- Only PNG format supports embedding both metadata and workflow at the same time. Other formats can only embed metadata.
 #### Duplicate Filename
 - When the filename already exists, an index will be added at the end of the filename, 
 e.g. `file.png, file_1.png, file_2.png`.