diff --git a/bin/linja b/bin/linja
index 920a5453e..8a4e7b653 100755
--- a/bin/linja
+++ b/bin/linja
@@ -335,6 +335,10 @@ def get_lean_options(args):
         args.lean_options.append("--flycheck")
     if args.discard:
         args.lean_options.append("--discard")
+    if args.memory:
+        args.lean_options += ["-M", args.memory]
+    if args.Trust:
+        args.lean_options.append("--Trust")
     if args.to_axiom:
         args.lean_options.append("--to_axiom")
     if args.cache:
@@ -352,9 +356,11 @@ def parse_arg(argv):
     parser.add_argument('--directory', '-C', action='store', help="change to DIR before doing anything else.")
     parser.add_argument('--lean-config-option', '-D', action='append', help="set a Lean configuration option (name=value)")
     parser.add_argument('--verbose', '-v', action='store_true', help="turn on verbose option")
+    parser.add_argument('--memory', '-M', action='store', default=None, const=1, nargs='?', help="maximum amount of memory that can be used by Lean [default=unbounded]")
     parser.add_argument('--keep-going', '-k', action='store', default=None, const=1, nargs='?', help="keep going until N jobs fail [default=1]")
-    parser.add_argument('--discard', '-T', action='store_true', default=False, help="discard the proof of imported theorems after checking")
+    parser.add_argument('--discard', '-r', action='store_true', default=False, help="discard the proof of imported theorems after checking")
     parser.add_argument('--to_axiom', '-X', action='store_true', default=False, help="discard proofs of all theorems after checking them, i.e., theorems become axioms after checking")
+    parser.add_argument('--Trust', '-T', action='store_true', default=False, help="short-cut for maximum trust level (e.g., Lean will not type check imported files)")
     parser.add_argument('targets', nargs='*')
     args = parser.parse_args(argv)
     check_requirements()