diff --git a/base64.md b/base64.md
index 0360a8da8..543a8d802 100644
--- a/base64.md
+++ b/base64.md
@@ -1345,3 +1345,9 @@ pass: paluch
 #### Colorize Images
 
 `aHR0cHM6Ly9mb3J1bS5tb2JpbGlzbS5vcmcvc2VhcmNoLnBocD9rZXl3b3Jkcz1jb2xvcml6ZStpbWFnZXMrJnRlcm1zPWFsbCZhdXRob3I9JnNjPTEmc2Y9dGl0bGVvbmx5JnNyPXRvcGljcyZzaz10JnNkPWQmc3Q9MCZjaD0zMDAmdD0wJnN1Ym1pdD1TZWFyY2g`
+
+***
+
+#### Duolingo Guide
+
+`aHR0cHM6Ly9yZW50cnkuY28vRHVvbGluZ29HdWlkZQ==`