diff --git a/cts1_ground_support/json_parser.py b/cts1_ground_support/json_parser.py
index fff08d6..8f14d43 100644
--- a/cts1_ground_support/json_parser.py
+++ b/cts1_ground_support/json_parser.py
@@ -1,9 +1,10 @@
 """Tools for parsing JSON strings from blobs of text."""
 
-import json
 from collections.abc import Iterator
 from dataclasses import dataclass
 
+import orjson
+
 
 @dataclass(kw_only=True)
 class ParsedJson:
@@ -24,7 +25,7 @@ def extract_json_blobs(content: str) -> Iterator[ParsedJson]:
             for end_idx in range(len(content) - 1, start_idx, -1):
                 if content[end_idx] == "}":
                     try:
-                        data = json.loads(content[start_idx : end_idx + 1])
+                        data = orjson.loads(content[start_idx : end_idx + 1])
                         yield ParsedJson(
                             data=data,
                             start_idx=start_idx,
@@ -33,7 +34,7 @@ def extract_json_blobs(content: str) -> Iterator[ParsedJson]:
                         )
                         start_idx = end_idx
                         break
-                    except json.JSONDecodeError:
+                    except orjson.JSONDecodeError:
                         pass
         start_idx += 1
 
@@ -43,6 +44,9 @@ def auto_format_json_in_blob(blob: str) -> str:
     json_parts = list(extract_json_blobs(blob))
 
     for json_part in json_parts:
-        blob = blob.replace(json_part.original_str, json.dumps(json_part.data, indent=4))
+        formatted_data: str = orjson.dumps(json_part.data, option=orjson.OPT_INDENT_2).decode(
+            "utf-8"
+        )
+        blob = blob.replace(json_part.original_str, formatted_data)
 
     return blob
diff --git a/pyproject.toml b/pyproject.toml
index 41e85e4..086700f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,13 +6,15 @@ build-backend = "hatchling.build"
 name = "cts1_ground_support"
 version = "v0-dev"
 dependencies = [
-  "GitPython",
-  "pyserial",
-  "loguru",
-  "dash",
-  "dash-bootstrap-components",
-  "dash-split-pane~=1.0.0",
+  "GitPython<4,>3",
+  "pyserial>3,<4",
+  "loguru~=0.7.2",
+  "dash>2,<3",
+  "dash-bootstrap-components>1,<2",
+  "dash-split-pane>=1,<2",
   "pytz",
+  "orjson>3,<4",
+  "platformdirs>4,<5"
 ]
 requires-python = ">=3.10"
 authors = [