4 files changed, 14 insertions, 16 deletions
diff --git a/lib/license/finder/ext/go_modules.rb b/lib/license/finder/ext/go_modules.rb
index 2ef3aa2..d86f21a 100644
--- a/lib/license/finder/ext/go_modules.rb
+++ b/lib/license/finder/ext/go_modules.rb
@@ -25,10 +25,6 @@ module LicenseFinder
 
     private
 
-    def shell
-      @shell ||= ::License::Management::Shell.new
-    end
-
     def absolute_project_path
       @absolute_project_path ||= Pathname(project_path).cleanpath
     end
diff --git a/lib/license/finder/ext/pip.rb b/lib/license/finder/ext/pip.rb
index a55dba7..5ef6602 100644
--- a/lib/license/finder/ext/pip.rb
+++ b/lib/license/finder/ext/pip.rb
@@ -51,10 +51,6 @@ module LicenseFinder
       Dir.chdir(project_path) { yield }
     end
 
-    def shell
-      @shell ||= ::License::Management::Shell.new
-    end
-
     def pypi
       @pypi ||= Spandx::Python::PyPI.new(sources: [
         Spandx::Python::Source.new({
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
diff --git a/lib/license/finder/ext/shared_helpers.rb b/lib/license/finder/ext/shared_helpers.rb
index cee79ab..c3d6319 100644
--- a/lib/license/finder/ext/shared_helpers.rb
+++ b/lib/license/finder/ext/shared_helpers.rb
@@ -2,10 +2,13 @@
 
 module LicenseFinder
   module SharedHelpers
+    def shell
+      ::License::Management.shell
+    end
+
     class Cmd
       def self.run(command)
-        @shell ||= ::License::Management::Shell.new
-        @shell.execute(command)
+        ::License::Management.shell.execute(command)
       end
     end
   end