diff --git a/server/autotest_server/testers/haskell/haskell_tester.py b/server/autotest_server/testers/haskell/haskell_tester.py
index 572f2841..754e3c25 100644
--- a/server/autotest_server/testers/haskell/haskell_tester.py
+++ b/server/autotest_server/testers/haskell/haskell_tester.py
@@ -7,7 +7,7 @@
 from ..tester import Tester, Test, TestError
 from ..specs import TestSpecs
 
-STACK_OPTIONS = ["--resolver=lts-14.27", "--system-ghc", "--allow-different-user"]
+STACK_OPTIONS = ["--resolver=lts-16.17", "--system-ghc", "--allow-different-user"]
 
 
 class HaskellTest(Test):
diff --git a/server/autotest_server/testers/haskell/setup.py b/server/autotest_server/testers/haskell/setup.py
index 2cbcdb65..5f049b62 100644
--- a/server/autotest_server/testers/haskell/setup.py
+++ b/server/autotest_server/testers/haskell/setup.py
@@ -7,7 +7,7 @@
 
 
 def create_environment(_settings, _env_dir, default_env_dir):
-    resolver = "lts-14.27"
+    resolver = "lts-16.17"
     cmd = ["stack", "build", "--resolver", resolver, "--system-ghc", *HASKELL_TEST_DEPS]
     subprocess.run(cmd, check=True)
 
@@ -16,7 +16,10 @@ def create_environment(_settings, _env_dir, default_env_dir):
 
 def install():
     subprocess.run(os.path.join(os.path.dirname(os.path.realpath(__file__)), "requirements.system"), check=True)
-
+    resolver = "lts-16.17"
+    cmd = ["stack", "build", "--resolver", resolver, "--system-ghc", *HASKELL_TEST_DEPS]
+    subprocess.run(cmd, check=True)
+    subprocess.run(os.path.join(os.path.dirname(os.path.realpath(__file__)), "stack_permissions.sh"), check=True, shell=True)
 
 def settings():
     with open(os.path.join(os.path.dirname(os.path.realpath(__file__)), "settings_schema.json")) as f:
diff --git a/server/autotest_server/testers/haskell/stack_permissions.sh b/server/autotest_server/testers/haskell/stack_permissions.sh
new file mode 100755
index 00000000..1671af06
--- /dev/null
+++ b/server/autotest_server/testers/haskell/stack_permissions.sh
@@ -0,0 +1,4 @@
+echo "allow-different-user: true" >> $STACK_ROOT/config.yaml
+chmod a+w $STACK_ROOT/stack.sqlite3.pantry-write-lock
+chmod a+w $STACK_ROOT/global-project/.stack-work/stack.sqlite3.pantry-write-lock
+chmod a+w $STACK_ROOT/pantry/pantry.sqlite3.pantry-write-lock
\ No newline at end of file
diff --git a/server/autotest_server/tests/test_autotest_server.py b/server/autotest_server/tests/test_autotest_server.py
index f2a61b61..6629ffe0 100644
--- a/server/autotest_server/tests/test_autotest_server.py
+++ b/server/autotest_server/tests/test_autotest_server.py
@@ -48,3 +48,9 @@ def test_sticky():
     autotest_server._clear_working_directory(autotest_worker_working_dir, autotest_worker)
 
     assert os.path.exists(path) is False
+
+def test_stack_permissions():
+    stack_root = os.environ['STACK_ROOT']
+    path = f"{stack_root}/stack.sqlite3.pantry-write-lock"
+    permissions = oct(os.stat(path).st_mode)[-3:]
+    assert permissions[1] == '6'
\ No newline at end of file