diff --git a/.eleventy.js b/.eleventy.js
index 757c039..b784e22 100644
--- a/.eleventy.js
+++ b/.eleventy.js
@@ -72,7 +72,7 @@ module.exports = function(eleventyConfig) {
       symbol: "#"
     }),
     level: [1,2,3,4],
-    slugify: eleventyConfig.getFilter("slug")
+    slugify: eleventyConfig.getFilter("slugify")
   });
   eleventyConfig.setLibrary("md", markdownLibrary);
 
diff --git a/_includes/layouts/post.njk b/_includes/layouts/post.njk
index df4210a..bf2d93f 100644
--- a/_includes/layouts/post.njk
+++ b/_includes/layouts/post.njk
@@ -6,7 +6,7 @@ templateClass: tmpl-post
 
 <time datetime="{{ page.date | htmlDateString }}">{{ page.date | readableDate }}</time>
 {%- for tag in tags | filterTagList %}
-{%- set tagUrl %}/tags/{{ tag | slug }}/{% endset %}
+{%- set tagUrl %}/tags/{{ tag | slugify }}/{% endset %}
 <a href="{{ tagUrl | url }}" class="post-tag">{{ tag }}</a>
 {%- endfor %}
 
diff --git a/_includes/postslist.njk b/_includes/postslist.njk
index d220513..ab8327a 100644
--- a/_includes/postslist.njk
+++ b/_includes/postslist.njk
@@ -4,7 +4,7 @@
     <a href="{{ post.url | url }}" class="postlist-link">{% if post.data.title %}{{ post.data.title }}{% else %}<code>{{ post.url }}</code>{% endif %}</a>
     <time class="postlist-date" datetime="{{ post.date | htmlDateString }}">{{ post.date | readableDate }}</time>
     {% for tag in post.data.tags | filterTagList %}
-      {% set tagUrl %}/tags/{{ tag | slug }}/{% endset %}
+      {% set tagUrl %}/tags/{{ tag | slugify }}/{% endset %}
       <a href="{{ tagUrl | url }}" class="post-tag">{{ tag }}</a>
     {% endfor %}
   </li>
diff --git a/tags-list.njk b/tags-list.njk
index 2553860..f129653 100644
--- a/tags-list.njk
+++ b/tags-list.njk
@@ -5,6 +5,6 @@ layout: layouts/home.njk
 <h1>Tags</h1>
 
 {% for tag in collections.tagList %}
-  {% set tagUrl %}/tags/{{ tag | slug }}/{% endset %}
+  {% set tagUrl %}/tags/{{ tag | slugify }}/{% endset %}
   <a href="{{ tagUrl | url }}" class="post-tag">{{ tag }}</a>
 {% endfor %}
diff --git a/tags.njk b/tags.njk
index fa1158b..852d923 100644
--- a/tags.njk
+++ b/tags.njk
@@ -12,7 +12,7 @@ pagination:
 layout: layouts/home.njk
 eleventyComputed:
   title: Tagged “{{ tag }}”
-permalink: /tags/{{ tag | slug }}/
+permalink: /tags/{{ tag | slugify }}/
 ---
 <h1>Tagged “{{ tag }}”</h1>