diff --git a/.gitignore b/.gitignore
index 0fe5af9..c7dc5e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,8 +15,8 @@ docs/theme
 # Generated using only the Github workflow
 benchmark_result.json
 
-singleheader/lexer.h
-singleheader/lexer.cpp
+singleheader/merve.h
+singleheader/merve.cpp
 
 #ignore VScode
 .vscode/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3207507..2919e3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -131,13 +131,13 @@ if(NOT MERVE_COVERAGE AND NOT EMSCRIPTEN)
 endif()
 
 install(
-  FILES include/lexer.h
+  FILES include/merve.h
   DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
   COMPONENT merve_development
 )
 
 install(
-  DIRECTORY include/lexer
+  DIRECTORY include/merve
   DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
   COMPONENT merve_development
 )
diff --git a/README.md b/README.md
index 5eee712..0b000fd 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ Copy `singleheader/merve.h` and `singleheader/merve.cpp` to your project.
 ## Usage
 
 ```cpp
-#include "lexer.h"
+#include "merve.h"
 #include <iostream>
 
 int main() {
diff --git a/include/lexer.h b/include/merve.h
similarity index 67%
rename from include/lexer.h
rename to include/merve.h
index 7c01542..0d48245 100644
--- a/include/lexer.h
+++ b/include/merve.h
@@ -1,6 +1,6 @@
 #ifndef MERVE_H
 #define MERVE_H
 
-#include "lexer/parser.h"
+#include "merve/parser.h"
 
 #endif  // MERVE_H
diff --git a/include/lexer/parser.h b/include/merve/parser.h
similarity index 99%
rename from include/lexer/parser.h
rename to include/merve/parser.h
index 9e30bc8..2a2f406 100644
--- a/include/lexer/parser.h
+++ b/include/merve/parser.h
@@ -1,7 +1,7 @@
 #ifndef MERVE_PARSER_H
 #define MERVE_PARSER_H
 
-#include "lexer/version.h"
+#include "merve/version.h"
 
 #include <optional>
 #include <string>
diff --git a/include/lexer/version.h b/include/merve/version.h
similarity index 100%
rename from include/lexer/version.h
rename to include/merve/version.h
diff --git a/singleheader/amalgamate.py b/singleheader/amalgamate.py
index 1ded9d6..f0ea379 100644
--- a/singleheader/amalgamate.py
+++ b/singleheader/amalgamate.py
@@ -37,7 +37,7 @@
 ALLCFILES = ["parser.cpp"]
 
 # order matters
-ALLCHEADERS = ["lexer.h"]
+ALLCHEADERS = ["merve.h"]
 
 # Output file names
 OUTPUT_H = "merve.h"
@@ -82,7 +82,7 @@ def dofile(fid: str, prepath: str, filename: str) -> None:
             s = includepattern.search(line)
             if s:
                 includedfile = s.group(1)
-                if includedfile == "lexer.h" and filename == "lexer.cpp":
+                if includedfile == "merve.h" and filename == "merve.cpp":
                     print(line, file=fid)
                     continue
 
diff --git a/src/lexer.cpp b/src/lexer.cpp
index 4fb2337..4584537 100644
--- a/src/lexer.cpp
+++ b/src/lexer.cpp
@@ -1,2 +1,2 @@
-#include "lexer.h"
+#include "merve.h"
 #include "parser.cpp"
diff --git a/src/parser.cpp b/src/parser.cpp
index 70713e7..86e6503 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -1,4 +1,4 @@
-#include "lexer/parser.h"
+#include "merve/parser.h"
 #include <array>
 #include <cstdint>
 #include <limits>
diff --git a/tests/real_world_tests.cpp b/tests/real_world_tests.cpp
index 0bea0b5..61f0c43 100644
--- a/tests/real_world_tests.cpp
+++ b/tests/real_world_tests.cpp
@@ -1,4 +1,4 @@
-#include "lexer.h"
+#include "merve.h"
 #include "gtest/gtest.h"
 
 TEST(real_world_tests, esbuild_hint_style) {