diff --git a/config.yml b/config.yml
index df8b682..2e23211 100644
--- a/config.yml
+++ b/config.yml
@@ -33,7 +33,6 @@ params:
       - plugins/animate/animate.min.css
       - plugins/venobox/venobox.css
       - plugins/mdi/css/materialdesignicons.min.css
-      - plugins/simpleicons/font/simple-icons.min.css
       - plugins/fira/fira.css
     js:
       - plugins/jQuery/jquery.min.js
@@ -43,16 +42,16 @@ params:
       - plugins/filterizr/jquery.filterizr.min.js
   social:
     - title: YouTube
-      icon: si si-youtube
+      icon: mdi mdi-youtube
       link: https://www.youtube.com/@cantornews
     - title: Twitter
-      icon: si si-twitter
+      icon: mdi mdi-twitter
       link: https://twitter.com/cantor_news
     - title: Instagram
-      icon: si si-instagram
+      icon: mdi mdi-instagram
       link: https://instagram.com/cantor.news
     - title: Facebook
-      icon: si si-facebook
+      icon: mdi mdi-facebook
       link: https://facebook.com/cantor.news
   preloader:
     enable: true
diff --git a/content/german/author/cantortechnik-ag.md b/content/german/author/cantortechnik-ag.md
index 3a40d6f..38daefa 100644
--- a/content/german/author/cantortechnik-ag.md
+++ b/content/german/author/cantortechnik-ag.md
@@ -6,10 +6,10 @@ email: technik@cantor-gymnasium.de
 image: /media/people/gcg.webp
 social:
   - title: YouTube
-    icon: si si-youtube
+    icon: mdi mdi-youtube
     link: https://www.youtube.com/channel/UCFCJdxg2D9RXH0qjZ8MMw1g
   - title: Gitea
-    icon: si si-gitea
+    icon: mdi mdi-gitea
     link: https://git.cantorgymnasium.de/cantortechnik/
   - title: E-Mail
     icon: mdi mdi-at
diff --git a/static/admin/config.yml b/static/admin/config.yml
index 1286eab..70938ec 100644
--- a/static/admin/config.yml
+++ b/static/admin/config.yml
@@ -582,18 +582,16 @@ collections:
             name: "icon"
             widget: "select"
             options:
-              - { label: "YouTube", value: "si si-youtube" }
-              - { label: "Twitter", value: "si si-twitter" }
-              - { label: "Pinterest", value: "si si-pinterest" }
-              - { label: "GitHub", value: "si si-github" }
-              - { label: "Gitea", value: "si si-gitea" }
-              - { label: "Git", value: "si si-git" }
-              - { label: "Vimeo", value: "si si-vimeo" }
-              - { label: "Instagram", value: "si si-instagram" }
-              - { label: "Facebook", value: "si si-facebook" }
-              - { label: "Linkedin", value: "si si-linkedin" }
+              - { label: "YouTube", value: "mdi mdi-youtube" }
+              - { label: "Twitter", value: "mdi mdi-twitter" }
+              - { label: "Pinterest", value: "mdi mdi-pinterest" }
+              - { label: "GitHub", value: "mdi mdi-github" }
+              - { label: "Git", value: "mdi mdi-git" }
+              - { label: "Vimeo", value: "mdi mdi-vimeo" }
+              - { label: "Instagram", value: "mdi mdi-instagram" }
+              - { label: "Facebook", value: "mdi mdi-facebook" }
+              - { label: "Linkedin", value: "mid mdi-linkedin" }
               - { label: "E-Mail", value: "mdi mdi-at" }
-              - { label: "TikTok", value: "si si-tiktok" }
               - { label: "Sonstige", value: "mdi mdi-share-variant-outline" }
           - {label: "Link", name: "link", widget: "string"}
       - {label: "Beschreibung", name: "body", widget: "markdown"}
@@ -718,18 +716,16 @@ collections:
             name: "icon"
             widget: "select"
             options:
-              - { label: "YouTube", value: "si si-youtube" }
-              - { label: "Twitter", value: "si si-twitter" }
-              - { label: "Pinterest", value: "si si-pinterest" }
-              - { label: "GitHub", value: "si si-github" }
-              - { label: "Gitea", value: "si si-gitea" }
-              - { label: "Git", value: "si si-git" }
-              - { label: "Vimeo", value: "si si-vimeo" }
-              - { label: "Instagram", value: "si si-instagram" }
-              - { label: "Facebook", value: "si si-facebook" }
-              - { label: "Linkedin", value: "si si-linkedin" }
+              - { label: "YouTube", value: "mdi mdi-youtube" }
+              - { label: "Twitter", value: "mdi mdi-twitter" }
+              - { label: "Pinterest", value: "mdi mdi-pinterest" }
+              - { label: "GitHub", value: "mdi mdi-github" }
+              - { label: "Git", value: "mdi mdi-git" }
+              - { label: "Vimeo", value: "mdi mdi-vimeo" }
+              - { label: "Instagram", value: "mdi mdi-instagram" }
+              - { label: "Facebook", value: "mdi mdi-facebook" }
+              - { label: "Linkedin", value: "mid mdi-linkedin" }
               - { label: "E-Mail", value: "mdi mdi-at" }
-              - { label: "TikTok", value: "si si-tiktok" }
               - { label: "Sonstige", value: "mdi mdi-share-variant-outline" }
           - {label: "Link", name: "link", widget: "string"}
       - {label: "Type", name: "type", widget: "hidden", default: "cantorpreis"}