diff --git a/lib/gym/build_command_generator.rb b/lib/gym/build_command_generator.rb
index 52d7c99..32ad914 100644
--- a/lib/gym/build_command_generator.rb
+++ b/lib/gym/build_command_generator.rb
@@ -36,7 +36,7 @@ def options
 
         options = []
         options += project_path_array
-        options << "-configuration '#{config[:configuration]}'" # We need `Release` to export the DSYM file as well
+        options << "-configuration '#{config[:configuration]}'" if config[:configuration]
         options << "-sdk '#{config[:sdk]}'" if config[:sdk]
         options << "-destination '#{config[:destination]}'" if config[:destination]
         options << "-xcconfig '#{config[:xcconfig]}'" if config[:xcconfig]
diff --git a/lib/gym/detect_values.rb b/lib/gym/detect_values.rb
index fc79a8f..ab189eb 100644
--- a/lib/gym/detect_values.rb
+++ b/lib/gym/detect_values.rb
@@ -25,6 +25,7 @@ def self.set_additional_default_values
       end
 
       detect_scheme
+      detect_configuration
 
       config[:output_name] ||= Gym.project.app_name
 
@@ -96,31 +97,66 @@ def self.choose_project
 
     def self.detect_scheme
       config = Gym.config
+      proj_schemes = Gym.project.schemes
+
       if config[:scheme].to_s.length > 0
         # Verify the scheme is available
-        unless Gym.project.schemes.include?(config[:scheme].to_s)
+        unless proj_schemes.include?(config[:scheme].to_s)
           Helper.log.error "Couldn't find specified scheme '#{config[:scheme]}'.".red
           config[:scheme] = nil
         end
       end
 
-      if config[:scheme].to_s.length == 0
-        proj_schemes = Gym.project.schemes
-        if proj_schemes.count == 1
-          config[:scheme] = proj_schemes.last
-        elsif proj_schemes.count > 1
-          if Helper.is_ci?
-            Helper.log.error "Multiple schemes found but you haven't specified one.".red
-            Helper.log.error "Since this is a CI, please pass one using the `scheme` option".red
-            raise "Multiple schemes found".red
-          else
-            puts "Select Scheme: "
-            config[:scheme] = choose(*(proj_schemes))
-          end
+      return if config[:scheme].to_s.length > 0
+
+      if proj_schemes.count == 1
+        config[:scheme] = proj_schemes.last
+      elsif proj_schemes.count > 1
+        if Helper.is_ci?
+          Helper.log.error "Multiple schemes found but you haven't specified one.".red
+          Helper.log.error "Since this is a CI, please pass one using the `scheme` option".red
+          raise "Multiple schemes found".red
+        else
+          puts "Select Scheme: "
+          config[:scheme] = choose(*(proj_schemes))
+        end
+      else
+        raise "Couldn't find any schemes in this project".red
+      end
+    end
+
+    # Detects the available configurations (e.g. Debug, Release)
+    def self.detect_configuration
+      config = Gym.config
+      configurations = Gym.project.configurations
+      if config[:configuration]
+        # Verify the configuration is available
+        unless configurations.include?(config[:configuration])
+          Helper.log.error "Couldn't find specified configuration '#{config[:configuration]}'.".red
+          config[:configuration] = nil
+        end
+      end
+
+      # Usually we want `Release`
+      # We prefer `Release` to export the DSYM file as well
+      config[:configuration] ||= "Release" if configurations.include?("Release")
+
+      return if config[:configuration].to_s.length > 0
+      return if configurations.count == 0 # this is an optional value anyway
+
+      if configurations.count == 1
+        config[:configuration] = configurations.last
+      else
+        if Helper.is_ci?
+          Helper.log.error "Multiple configurations found but you haven't specified one.".red
+          Helper.log.error "Since this is a CI, please pass one using the `configuration` option".red
+          raise "Multiple configurations found".red
         else
-          raise "Couldn't find any schemes in this project".red
+          puts "Select Configuration: "
+          config[:configuration] = choose(*(configurations))
         end
       end
     end
+
   end
 end
diff --git a/lib/gym/options.rb b/lib/gym/options.rb
index c668598..58b0543 100644
--- a/lib/gym/options.rb
+++ b/lib/gym/options.rb
@@ -70,7 +70,7 @@ def self.plain_options
                                      short_option: "-q",
                                      env_name: "GYM_CONFIGURATION",
                                      description: "The configuration to use when building the app. Defaults to 'Release'",
-                                     default_value: "Release"),
+                                     optional: true),
         FastlaneCore::ConfigItem.new(key: :silent,
                                      short_option: "-t",
                                      env_name: "GYM_SILENT",
diff --git a/lib/gym/project.rb b/lib/gym/project.rb
index f9d006d..ce39d44 100644
--- a/lib/gym/project.rb
+++ b/lib/gym/project.rb
@@ -29,6 +29,27 @@ def schemes
       results
     end
 
+    # Get all available configurations in an array
+    def configurations
+      results = []
+      splitted = raw_info.split("Configurations:")
+      return [] if splitted.count != 2 # probably a CocoaPods project
+
+      output = splitted.last.split(":").first
+      output.split("\n").each_with_index do |current, index|
+        current = current.strip
+
+        if current.length == 0
+          next if index == 0
+          break # as we want to break on the empty line
+        end
+
+        results << current
+      end
+
+      results
+    end
+
     def app_name
       # WRAPPER_NAME: Example.app
       # WRAPPER_SUFFIX: .app
@@ -60,7 +81,10 @@ def build_settings(key)
     end
 
     def raw_info
-      # e.g.
+      # Examples:
+
+      # Standard:
+      #
       # Information about project "Example":
       #     Targets:
       #         Example
@@ -76,6 +100,15 @@ def raw_info
       #         Example
       #         ExampleUITests
 
+      # CococaPods
+      #
+      # Example.xcworkspace
+      # Information about workspace "Example":
+      #     Schemes:
+      #         Example
+      #         HexColors
+      #         Pods-Example
+
       return @raw if @raw
 
       # Unfortunately since we pass the workspace we also get all the
diff --git a/spec/project_spec.rb b/spec/project_spec.rb
index 78dd6eb..161f4df 100644
--- a/spec/project_spec.rb
+++ b/spec/project_spec.rb
@@ -26,6 +26,10 @@
         expect(@project.schemes).to eq(["Example"])
       end
 
+      it "#configurations returns all available configurations" do
+        expect(@project.configurations).to eq(["Debug", "Release"])
+      end
+
       it "#app_name" do
         expect(@project.app_name).to eq("ExampleProductName")
       end
@@ -39,9 +43,13 @@
         @workspace = Gym::Project.new(Gym.config)
       end
 
-      it "#schemes returns all schemes - but not the CocoaPods schemes" do
+      it "#schemes returns all schemes" do
         expect(@workspace.schemes).to eq(["Example", "HexColors", "Pods-Example"])
       end
+
+      it "#schemes returns all configurations" do
+        expect(@workspace.configurations).to eq([])
+      end
     end
   end
 end