diff --git a/build.ps1 b/build.ps1
index 25a8f5e..74ebfc1 100644
--- a/build.ps1
+++ b/build.ps1
@@ -45,6 +45,9 @@ mkdir -p $ObjDir > $null
 mkdir -p $OutDir > $null
 mkdir -p $TestsDir > $null
 
+# Run code generation
+Invoke-Expression "python3 -m codegen"
+
 # Build and run tests
 Invoke-Expression "$Compiler $GeneralFlags $IncludeDirs $TestIncludeDirs $SrcFiles $TestSrcFiles $TestOutputs" -ErrorAction Stop