diff --git a/blog/config.toml b/blog/config.toml
index 97f627b5..33d1d449 100644
--- a/blog/config.toml
+++ b/blog/config.toml
@@ -10,8 +10,8 @@ minify_html = false
 ignored_content = [
     "*/README.md",
     "*/LICENSE-CC-BY-NC",
-    "**/*.ja.md",           # ignora qualquer arquivo terminado em .ja.md
-    "**/*.ja/*.md",         # ignora diretórios "algo.ja" com md dentro, se houver
+    "**/*.ja.md",         # ignora qualquer arquivo terminado em .ja.md
+    "**/*.ja/*.md",       # ignora diretórios "algo.ja" com md dentro, se houver
 ]
 
 [markdown]
@@ -21,28 +21,37 @@ smart_punctuation = true
 
 [link_checker]
 skip_prefixes = [
-    "https://crates.io/crates",                                          # crates.io API sometimes unstable
-    "https://www.amd.com/system/files/TechDocs/",                        # issues with PDFs
-    "https://developer.apple.com/library/archive/qa/qa1118/_index.html", # 401 errors
-    "https://github.com",                                                # rate limiting (429)
-    "https://www.linkedin.com/",                                         # invalid status codes
+    "https://crates.io/crates",                                          # see https://github.com/rust-lang/crates.io/issues/788
+    "https://www.amd.com/system/files/TechDocs/",                        # seems to have problems with PDFs
+    "https://developer.apple.com/library/archive/qa/qa1118/_index.html", # results in a 401 (I don't know why)
+    "https://github.com",                                                # rate limiting often leads to "Error 429 Too Many Requests"
+    "https://www.linkedin.com/",                                         # seems to send invalid HTTP status codes
 ]
-
-# Ignore all anchor checks on any external site
 skip_anchor_prefixes = [
-    "http://",
-    "https://",
+    "https://github.com/",                            # see https://github.com/getzola/zola/issues/805
+    "https://docs.rs/x86_64/0.1.2/src/",              # source code highlight
+    "https://doc.rust-jp.rs/book-ja/",                # seems like Zola has problems with Japanese anchor names
+    "https://doc.rust-jp.rs/edition-guide/rust-2018", # seems like Zola has problems with Japanese anchor names
+    "https://doc.rust-jp.rs/rust-nomicon-ja/",        # seems like Zola has problems with Japanese anchor names
 ]
 
-# Treat external link issues as warnings instead of build errors
-external_level = "warn"
-
-
 [extra]
 subtitle = "Philipp Oppermann's blog"
 author = { name = "Philipp Oppermann" }
 default_language = "en"
-languages = ["en", "ar", "es", "fa", "fr", "ja", "ko", "pt-BR", "ru", "zh-CN", "zh-TW"]
+languages = [
+    "en",
+    "ar",
+    "es",
+    "fa",
+    "fr",
+    "ja",
+    "ko",
+    "pt-BR",
+    "ru",
+    "zh-CN",
+    "zh-TW",
+]
 
 [translations]
 lang_name = "English (original)"