1 files changed, 9 insertions, 6 deletions
diff --git a/lib/license/finder/ext/pipenv.rb b/lib/license/finder/ext/pipenv.rb
index 075ddd9..d681cc2 100644
--- a/lib/license/finder/ext/pipenv.rb
+++ b/lib/license/finder/ext/pipenv.rb
@@ -5,8 +5,8 @@ module LicenseFinder
     def prepare
       return unless pipfile?
 
-      shell.execute([:pipenv, '--python', python.version])
-      shell.execute([:pipenv, :run, :pipenv, :sync, '--pypi-mirror', python.pip_index_url])
+      shell.execute([:pipenv, '--python', python.version], env: default_env)
+      shell.execute([:pipenv, :run, :pipenv, :sync, '--pypi-mirror', python.pip_index_url], env: default_env)
     end
 
     def current_packages
@@ -17,10 +17,6 @@ module LicenseFinder
 
     private
 
-    def shell
-      @shell ||= ::License::Management::Shell.new
-    end
-
     def python
       @python ||= ::License::Management::Python.new
     end
@@ -52,5 +48,12 @@ module LicenseFinder
     def lockfile_hash
       @lockfile_hash ||= JSON.parse(IO.read(detected_package_path))
     end
+
+    def default_env
+      return {} unless shell.custom_certificate_installed?
+      return {} if ENV['PIP_CERT']
+
+      { 'PIP_CERT' => shell.custom_certificate_path.to_s }
+    end
   end
 end