diff --git a/pyproject.toml b/pyproject.toml
index d048bf9ff2b..d365105185f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -225,10 +225,10 @@ test = [
     "nose-timer~=1.0.0; python_version < '3.10'",
 ]
 typecheck = [
-    "mypy==1.5.1",
-    "types-PyYAML==6.0.12.2",
-    "types-chardet==5.0.4",
-    "types-requests==2.28.11.5",
+    "mypy==1.8.0",
+    "types-PyYAML==6.0.12.12",
+    "types-chardet==5.0.4.6",
+    "types-requests==2.31.0.20240125",
     "typing-extensions==4.4.0; python_version < '3.12'",
 ]
 
diff --git a/yt/frontends/rockstar/definitions.py b/yt/frontends/rockstar/definitions.py
index 7e6753f8308..578f29b77e6 100644
--- a/yt/frontends/rockstar/definitions.py
+++ b/yt/frontends/rockstar/definitions.py
@@ -108,7 +108,7 @@
         if len(item) == 2:
             halo_dts_tmp[rev].append(item)
         elif len(item) == 3:
-            mi, ma = item[2]  # type: ignore
+            mi, ma = item[2]
             if (mi <= rev) and (rev <= ma):
                 halo_dts_tmp[rev].append(item[:2])
     halo_dts[rev] = np.dtype(halo_dts_tmp[rev], align=True)