diff --git a/lib/license_finder/package_managers/cargo.rb b/lib/license_finder/package_managers/cargo.rb
index 36489a9f8..0135a2e63 100644
--- a/lib/license_finder/package_managers/cargo.rb
+++ b/lib/license_finder/package_managers/cargo.rb
@@ -6,7 +6,8 @@ module LicenseFinder
   class Cargo < PackageManager
     def current_packages
       cargo_output.map do |package|
-        CargoPackage.new(package, logger: logger)
+        path = Dir.glob("#{Dir.home}/.cargo/registry/src/**/#{package['name']}-#{package['version']}").first
+        CargoPackage.new(package, logger: logger, install_path: path)
       end
     end
 
diff --git a/lib/license_finder/package_managers/composer.rb b/lib/license_finder/package_managers/composer.rb
index d2039799f..8e91815b6 100644
--- a/lib/license_finder/package_managers/composer.rb
+++ b/lib/license_finder/package_managers/composer.rb
@@ -12,7 +12,11 @@ def possible_package_paths
 
     def current_packages
       dependency_list.map do |name, dependency|
-        ComposerPackage.new(name, dependency['version'], spec_licenses: dependency['license'])
+        path_command = "composer show #{name} -P"
+        stdout, _stderr, status =  Dir.chdir(project_path) { Cmd.run(path_command) }
+
+        path = status.success? ? stdout.split(' ').last : ''
+        ComposerPackage.new(name, dependency['version'], spec_licenses: dependency['license'], install_path: path)
       end
     end
 
diff --git a/lib/license_finder/package_managers/sbt.rb b/lib/license_finder/package_managers/sbt.rb
index 63fa41821..234330712 100644
--- a/lib/license_finder/package_managers/sbt.rb
+++ b/lib/license_finder/package_managers/sbt.rb
@@ -30,7 +30,9 @@ def current_packages
             'version' => version,
             'licenses' => [{ 'name' => row['License'] }]
           }
-          SbtPackage.new(spec, logger: logger, include_groups: @include_groups)
+
+          path = File.join("#{Dir.home}/.ivy2/cache", "#{spec['groupId']}/#{spec['artifactId']}")
+          SbtPackage.new(spec, logger: logger, include_groups: @include_groups, install_path: path)
         end
       end