diff --git a/_licenses/bsl-1.0.txt b/_licenses/bsl-1.0.txt
index ae37c9a..8da7d01 100644
--- a/_licenses/bsl-1.0.txt
+++ b/_licenses/bsl-1.0.txt
@@ -9,6 +9,9 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 note: Boost recommends taking the additional step of adding a boilerplate notice to the top of each file. The boilerplate can be found at the [Boost Software License FAQ](https://www.boost.org/users/license.html#FAQ).
 
 using:
+  - Boost: https://github.com/boostorg/boost/blob/master/LICENSE_1_0.txt
+  - Catch2: https://github.com/catchorg/Catch2/blob/master/LICENSE.txt
+  - DMD: https://github.com/dlang/dmd/blob/master/LICENSE.txt
 
 permissions:
   - commercial-use
diff --git a/_licenses/zlib.txt b/_licenses/zlib.txt
index 9ed25ed..706b1b5 100644
--- a/_licenses/zlib.txt
+++ b/_licenses/zlib.txt
@@ -7,6 +7,9 @@ description: A short permissive license, compatible with GPL. Requires altered s
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders.
 
 using:
+  - GLFW: https://github.com/glfw/glfw/blob/master/LICENSE.md
+  - Portainer: https://github.com/portainer/portainer/blob/develop/LICENSE
+  - TinyXML-2: https://github.com/leethomason/tinyxml2/blob/master/LICENSE.txt
 
 permissions:
   - commercial-use
diff --git a/spec/license_meta_spec.rb b/spec/license_meta_spec.rb
index f5d58c6..02b7c8d 100644
--- a/spec/license_meta_spec.rb
+++ b/spec/license_meta_spec.rb
@@ -27,7 +27,6 @@ describe 'license meta' do
           'agpl-3.0',
           'artistic-2.0',
           'bsd-3-clause-clear',
-          'bsl-1.0',
           'cc0-1.0',
           'cc-by-4.0',
           'cc-by-sa-4.0',
@@ -38,8 +37,7 @@ describe 'license meta' do
           'ms-pl',
           'ms-rl',
           'ofl-1.1',
-          'wtfpl',
-          'zlib'
+          'wtfpl'
         ]
         skip 'added before 3 using examples required' if legacy.include?(license['slug'])
         expect(examples.length).to eq(3)