diff --git a/package.json b/package.json
index 229845ddd..6b0238055 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
         "luxon": "1.25.0",
         "markdown-it": "12.0.2",
         "markdown-it-abbr": "1.0.4",
-        "markdown-it-anchor": "5.3.0",
+        "markdown-it-anchor": "6.0.1",
         "markdown-it-container": "3.0.0",
         "markdown-it-deflist": "2.1.0",
         "markdown-it-emoji": "2.0.0",
diff --git a/src/components/editor/table-of-contents/table-of-contents.tsx b/src/components/editor/table-of-contents/table-of-contents.tsx
index 7e67e7d5c..d738fe17e 100644
--- a/src/components/editor/table-of-contents/table-of-contents.tsx
+++ b/src/components/editor/table-of-contents/table-of-contents.tsx
@@ -26,8 +26,8 @@ const convertLevel = (toc: TocAst, levelsToShowUnderThis: number, headerCounts:
   }
 
   const rawName = toc.n.trim()
-  const nameCount = (headerCounts.get(rawName) ?? 0) + 1
-  const slug = `#${slugify(rawName)}${nameCount > 1 ? `-${nameCount}` : ''}`
+  const nameCount = (headerCounts.get(rawName) ?? -1) + 1
+  const slug = `#${slugify(rawName)}${nameCount > 0 ? `-${nameCount}` : ''}`
 
   headerCounts.set(rawName, nameCount)
 
diff --git a/yarn.lock b/yarn.lock
index aa05e5308..f4e810d55 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9437,10 +9437,10 @@ markdown-it-abbr@1.0.4:
   resolved "https://registry.yarnpkg.com/markdown-it-abbr/-/markdown-it-abbr-1.0.4.tgz#d66b5364521cbb3dd8aa59dadfba2fb6865c8fd8"
   integrity sha1-1mtTZFIcuz3Yqlna37ovtoZcj9g=
 
-markdown-it-anchor@5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/markdown-it-anchor/-/markdown-it-anchor-5.3.0.tgz#d549acd64856a8ecd1bea58365ef385effbac744"
-  integrity sha512-/V1MnLL/rgJ3jkMWo84UR+K+jF1cxNG1a+KwqeXqTIJ+jtA8aWSHuigx8lTzauiIjBDbwF3NcWQMotd0Dm39jA==
+markdown-it-anchor@6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/markdown-it-anchor/-/markdown-it-anchor-6.0.1.tgz#f54b78757d0b61455faf8ced775b39498bd6d6f9"
+  integrity sha512-8qX4r5R6AtXla9HKCouEQ40inw69O5jR4VUXlZySsBLxIXlsJ3Yi9JV6JWPU4ZdA8jWTGDDJjJYNLwQ0W4jCag==
 
 markdown-it-container@3.0.0:
   version "3.0.0"