diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 119dc90..ba8290e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -100,7 +100,8 @@ target_link_libraries(cppast PUBLIC type_safe _cppast_tiny_process _cppast_libcl
 target_compile_definitions(cppast PUBLIC
                                 CPPAST_LIBCLANG_SYSTEM_INCLUDE_DIR="${LIBCLANG_SYSTEM_INCLUDE_DIR}"
                                 CPPAST_CLANG_BINARY="${CLANG_BINARY}"
-                                CPPAST_CLANG_VERSION_STRING="${LLVM_VERSION}")
+                                CPPAST_CLANG_VERSION_STRING="${LLVM_VERSION}"
+                                CPPAST_VERSION_STRING="${cppast_VERSION}")
 if(CPPAST_ENABLE_ASSERTIONS)
     target_compile_definitions(cppast PUBLIC CPPAST_ENABLE_ASSERTIONS)
 endif()
diff --git a/tool/main.cpp b/tool/main.cpp
index 9365123..af2b3ce 100644
--- a/tool/main.cpp
+++ b/tool/main.cpp
@@ -218,7 +218,7 @@ int main(int argc, char* argv[])
         print_help(options);
     else if (options.count("version"))
     {
-        std::cout << "cppast version 0.0\n";
+        std::cout << "cppast version " << CPPAST_VERSION_STRING << "\n";
         std::cout << "Copyright (C) Jonathan Müller 2017 <jonathanmueller.dev@gmail.com>\n";
         std::cout << '\n';
         std::cout << "Using libclang version " << CPPAST_CLANG_VERSION_STRING << '\n';