diff --git a/src/configuration.cc b/src/configuration.cc
index c186c7ed..26b6064e 100644
--- a/src/configuration.cc
+++ b/src/configuration.cc
@@ -598,6 +598,7 @@ class Configuration : public IConfiguration
 		setKey("output-interval", 5000);
 		setKey("daemonize-on-first-process-exit", 0);
 		setKey("coveralls-id", "");
+		setKey("coveralls-source", 0);
 		setKey("strip-path", "");
 		setKey("exclude-line", "");
 		setKey("exclude-region", "");
@@ -690,6 +691,8 @@ class Configuration : public IConfiguration
 			setKey(key, std::string(value));
 		else if (key == "coveralls-service-name")
 			setKey(key, std::string(value));
+		else if (key == "coveralls-source")
+			setKey(key, stoul(value));
 		else if (key == "cobertura-full-paths")
 			setKey(key, stoul(std::string(value)));
 		else
@@ -704,7 +707,9 @@ class Configuration : public IConfiguration
 				"                           high-limit=NUM             Percentage for high coverage\n"
 				"                           low-limit=NUM              Percentage for low coverage\n"
 				"                           merged-name=STR            Name of [merged] tag in HTML\n"
-				"                           coveralls-service-name=STR Service name for coveralls\n";
+				"                           coveralls-service-name=STR Service name for coveralls\n"
+				"                           coveralls-source=1         Upload actual source code\n"
+				;
 	}
 
 	std::string uncommonOptions()
diff --git a/src/writers/coveralls-writer.cc b/src/writers/coveralls-writer.cc
index aad5ca5d..2f963233 100644
--- a/src/writers/coveralls-writer.cc
+++ b/src/writers/coveralls-writer.cc
@@ -208,7 +208,32 @@ class CoverallsWriter : public WriterBase
 				if (n != file->m_lastLineNr - 1)
 					out << ",";
 			}
-			out << "]\n";
+			out << "]";
+
+			if (conf.keyAsInt("coveralls-source"))
+			{
+				out << ",\n";
+
+				size_t sz = 0;
+				char *p = (char *)read_file(&sz, "%s", file->m_name.c_str());
+				if (p)
+				{
+					std::vector<std::string> lines = split_string(std::string(p), "\n");
+					out << "   \"source\": [";
+					for (unsigned i = 0; i < lines.size(); i++)
+					{
+						std::string line = escape_json(lines[i]);
+						out << "\"" + line + "\"";
+						if (i != lines.size() - 1)
+						{
+							out << ",";
+						}
+					}
+					out << "]";
+				}
+				free(p);
+			}
+			out << "\n";
 
 			// Add comma or not on the last run
 			filesLeft--;