diff --git a/CMakeLists.txt b/CMakeLists.txt
index cfac812..2c5ef49 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.22)
 project(scsl LANGUAGES CXX
-        VERSION 1.0.2
+        VERSION 1.0.3
         DESCRIPTION "Shimmering Clarity Standard Library")
 
 set(CMAKE_CXX_STANDARD 14)
diff --git a/include/scsl/SimpleConfig.h b/include/scsl/SimpleConfig.h
index 550bf0d..f0d7f78 100644
--- a/include/scsl/SimpleConfig.h
+++ b/include/scsl/SimpleConfig.h
@@ -121,6 +121,10 @@ public:
 	/// \return The value stored under the key, or the default
 	///         value.
 	static std::string	GetGlobal(std::string &key, const std::string &defaultValue);
+
+	/// \brief Set a configuration value. This will override any
+	///        value set.
+	static void	 	PutGlobal(std::string &key, const std::string &value);
 #endif
 
 	/// \brief The constructor doesn't need any initialisation.
@@ -173,6 +177,15 @@ public:
 	///         value.
 	std::string	Get(std::string &key, std::string defaultValue);
 
+	/// \brief Set a configuration value. This will override any
+	///        value set.
+	///
+	/// \param key The key to look up. See the class documentation
+	///        for information on how this is used.
+	/// \param value The value to set.
+	/// \return
+	void 	Put(std::string &key, const std::string value);
+
 private:
 	std::string 				envPrefix;
 	std::map<std::string, std::string>	vars;
diff --git a/src/sl/SimpleConfig.cc b/src/sl/SimpleConfig.cc
index 78fcd13..4dae11c 100644
--- a/src/sl/SimpleConfig.cc
+++ b/src/sl/SimpleConfig.cc
@@ -90,6 +90,13 @@ SimpleConfig::GetGlobal(std::string &key, const std::string &defaultValue)
 }
 
 
+void
+SimpleConfig::PutGlobal(std::string &key, const std::string &value)
+{
+	return globalConfig.Put(key, value);
+}
+
+
 SimpleConfig::SimpleConfig()
 {
 }
@@ -173,6 +180,13 @@ SimpleConfig::Get(std::string &key, std::string defaultValue)
 }
 
 
+void
+SimpleConfig::Put(std::string &key, const std::string value)
+{
+	this->vars[key] = std::move(key);
+}
+
+
 std::vector<std::string>
 SimpleConfig::KeyList()
 {