diff --git a/gallery-container.html b/gallery-container.html
index 37f2aa9..75893ca 100644
--- a/gallery-container.html
+++ b/gallery-container.html
@@ -11,7 +11,7 @@
   <img src="gallery/10.jpg" alt="Image 10">
   <img src="gallery/11.jpg" alt="Image 11">
   <img src="gallery/12.jpg" alt="Image 12">
-  <img src="gallery/13.gif" alt="Image 13">
+  <img src="gallery/13.png" alt="Image 13">
   <img src="gallery/14.jpg" alt="Image 14">
   <img src="gallery/15.png" alt="Image 15">
   <img src="gallery/16.png" alt="Image 16">
@@ -19,7 +19,7 @@
   <img src="gallery/18.jpg" alt="Image 18">
   <img src="gallery/19.jpg" alt="Image 19">
   <img src="gallery/20.jpg" alt="Image 20">
-  <img src="gallery/21.gif" alt="Image 21">
+  <img src="gallery/21.png" alt="Image 21">
   <img src="gallery/22.jpg" alt="Image 22">
   <img src="gallery/23.jpg" alt="Image 23">
   <img src="gallery/24.png" alt="Image 24">