diff --git a/_chapters/add-an-api-to-handle-billing.md b/_chapters/add-an-api-to-handle-billing.md
index a10a73157..6c95aa7b6 100644
--- a/_chapters/add-an-api-to-handle-billing.md
+++ b/_chapters/add-an-api-to-handle-billing.md
@@ -55,7 +55,7 @@ Most of this is fairly straightforward but let's go over it quickly:
 
 - We are using a `calculateCost(storage)` function (that we are going to add soon) to figure out how much to charge a user based on the number of notes that are going to be stored.
 
-- We create a new Stripe object using our Stripe Secret key. We are getting this from the environment variable that we configured in the [previous chapter]({% link _chapters/handling-secrets-in-sst.md %}). At the time of this guide's writing, we are using apiVersion `2022-11-15` but you can check the [Stripe documentation](https://stripe.com/docs/api/versioning){:target="_blank"} for the latest version.
+- We create a new Stripe object using our Stripe Secret key. We are getting this from the environment variable that we configured in the [previous chapter]({% link _chapters/handling-secrets-in-sst.md %}). At the time of this guide's writing, we are using `apiVersion` `2022-11-15` but you can check the [Stripe documentation](https://stripe.com/docs/api/versioning){:target="_blank"} for the latest version.
 
 - Finally, we use the `stripe.charges.create` method to charge the user and respond to the request if everything went through successfully.
 
diff --git a/etc/ebook/build-epub.rb b/etc/ebook/build-epub.rb
index 7ce76d732..cbdf73d32 100644
--- a/etc/ebook/build-epub.rb
+++ b/etc/ebook/build-epub.rb
@@ -106,6 +106,9 @@ def build_chapter chapter_data
     # Replace images path
     chapter = chapter.gsub(/\/assets\//, '../../assets/')
 
+    # Remove target blank
+    chapter = chapter.gsub('{:target="_blank"}', '')
+
     # Remove class in table
     chapter = chapter.gsub('{: .cost-table }', '')
 
diff --git a/etc/ebook/build-pdf.rb b/etc/ebook/build-pdf.rb
index 182b01fbf..e9f3b1002 100644
--- a/etc/ebook/build-pdf.rb
+++ b/etc/ebook/build-pdf.rb
@@ -107,6 +107,9 @@ def build_chapter chapter_data
     # Replace images path
     chapter = chapter.gsub(/\/assets\//, '../../assets/')
 
+    # Remove target blank
+    chapter = chapter.gsub('{:target="_blank"}', '')
+
     # Remove class in table
     chapter = chapter.gsub('{: .cost-table }', '')