diff --git a/Dockerfile b/Dockerfile
index caef9df..df0ab61 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,6 +22,7 @@ RUN apt-get update --yes --quiet && apt-get install --yes --quiet --no-install-r
     libjpeg62-turbo-dev \
     zlib1g-dev \
     libwebp-dev \
+    libmagickwand-dev \
  && rm -rf /var/lib/apt/lists/*
 
 RUN apt-get update && apt-get upgrade -y
diff --git a/blog/templates/blog/blog_page.html b/blog/templates/blog/blog_page.html
index 900bd49..b6dc214 100644
--- a/blog/templates/blog/blog_page.html
+++ b/blog/templates/blog/blog_page.html
@@ -11,7 +11,7 @@
 
             {% with authors=page.authors.all %}
                 {% if authors %}
-                    <h3 class="sr-only">Posted by:</h3>
+                    <h2 class="sr-only">Posted by:</h2>
                     <ul>
                         {% for author in authors %}
                             <li style="display: inline">
diff --git a/requirements.txt b/requirements.txt
index 2d4128d..958ff23 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,5 @@ wagtail>=6.0,<6.1
 whitenoise>=6.6,<7.0
 wagtailcodeblock>=1.29.0.2,<2.0
 django-tailwind>=3.6.0
-django-browser-reload>=1.12
\ No newline at end of file
+django-browser-reload>=1.12
+Wand==0.6.13