diff --git a/joj3_config_generator/models/const.py b/joj3_config_generator/models/const.py
index e969399..981ef7c 100644
--- a/joj3_config_generator/models/const.py
+++ b/joj3_config_generator/models/const.py
@@ -8,6 +8,7 @@ DEFAULT_FILE_LIMIT = Memory("32m")
 DEFAULT_CASE_SCORE = 5
 DEFAULT_CLOCK_LIMIT_MULTIPLIER = 2
 DEFAULT_PROC_LIMIT = 50
+DEFAULT_PATH_ENV = "PATH=/usr/bin:/bin:/usr/local/bin"
 
 JOJ3_CONFIG_ROOT = PurePosixPath("/home/tt/.config/joj")
 TEAPOT_CONFIG_ROOT = PurePosixPath("/home/tt/.config/teapot")
diff --git a/joj3_config_generator/models/result.py b/joj3_config_generator/models/result.py
index eb5dfc9..8975215 100644
--- a/joj3_config_generator/models/result.py
+++ b/joj3_config_generator/models/result.py
@@ -7,6 +7,7 @@ from joj3_config_generator.models.const import (
     DEFAULT_CPU_LIMIT,
     DEFAULT_FILE_LIMIT,
     DEFAULT_MEMORY_LIMIT,
+    DEFAULT_PATH_ENV,
     DEFAULT_PROC_LIMIT,
 )
 
@@ -46,7 +47,7 @@ InputFile = Union[LocalFile, MemoryFile, PreparedFile, Symlink]
 
 class Cmd(BaseModel):
     args: List[str] = []
-    env: List[str] = ["PATH=/usr/bin:/bin:/usr/local/bin"]
+    env: List[str] = [DEFAULT_PATH_ENV]
     stdin: Union[InputFile, StreamIn] = MemoryFile(content="")
     stdout: Union[Collector, StreamOut] = Collector(name="stdout")
     stderr: Union[Collector, StreamOut] = Collector(name="stderr")
diff --git a/joj3_config_generator/transformers/task.py b/joj3_config_generator/transformers/task.py
index e976dfa..d3b3825 100644
--- a/joj3_config_generator/transformers/task.py
+++ b/joj3_config_generator/transformers/task.py
@@ -8,6 +8,7 @@ from joj3_config_generator.models import result, task
 from joj3_config_generator.models.common import Memory, Time
 from joj3_config_generator.models.const import (
     DEFAULT_CLOCK_LIMIT_MULTIPLIER,
+    DEFAULT_PATH_ENV,
     JOJ3_CONFIG_ROOT,
 )
 from joj3_config_generator.models.task import Parser as ParserEnum
@@ -86,6 +87,7 @@ def get_executor_with(
     executor_with_config = result.ExecutorWith(
         default=result.Cmd(
             args=shlex.split(task_stage.command),
+            env=[DEFAULT_PATH_ENV, *task_stage.env],
             copy_in={
                 file: result.LocalFile(src=str(JOJ3_CONFIG_ROOT / file))
                 # all copyin files store in this tools folder
diff --git a/tests/convert/basic/task.json b/tests/convert/basic/task.json
index a500ed6..78b0cb6 100644
--- a/tests/convert/basic/task.json
+++ b/tests/convert/basic/task.json
@@ -111,7 +111,9 @@
                                 "./tools/compile"
                             ],
                             "env": [
-                                "PATH=/usr/bin:/bin:/usr/local/bin"
+                                "PATH=/usr/bin:/bin:/usr/local/bin",
+                                "CC=clang",
+                                "CXX=clang++"
                             ],
                             "stdin": {
                                 "content": ""
diff --git a/tests/convert/basic/task.toml b/tests/convert/basic/task.toml
index 4cb9d0f..7660b10 100644
--- a/tests/convert/basic/task.toml
+++ b/tests/convert/basic/task.toml
@@ -6,6 +6,7 @@ release.begin_time = 2024-12-29 23:59:59+08:00
 
 [[stages]]
 name = "Compilation"
+env = [ "CC=clang", "CXX=clang++" ]
 command = "./tools/compile" # eg. script running cmake commands
 files.import = [ "tools/compile" ]
 files.export = [ "h7/build/ex2", "h7/build/ex2-asan", "h7/build/ex2-ubsan", "h7/build/ex2-msan", "h7/build/compile_commands.json" ]