diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index dce74d7..7f3d096 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,6 +12,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
+        with:
+          submodules: recursive
 
       - name: Setup Python (needed for Conan)
         uses: actions/setup-python@v4
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 70315dc..38579c4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,7 +30,7 @@ add_custom_command(
 add_custom_target(GenerateLexer DEPENDS ${LEXER_C} ${LEXER_H})
 
 # Step 3: Add executable
-add_executable(argon ${CFILES} ${LEXER_C})
+add_executable(argon external/xxhash/xxhash.c ${CFILES} ${LEXER_C})
 
 # Step 4: Build order
 add_dependencies(argon GenerateLexer)