diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 712e3ba6..df86f438 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -34,7 +34,7 @@ repos:
           - "--py39-plus"
 
   - repo: "https://github.com/psf/black-pre-commit-mirror"
-    rev: "24.10.0"
+    rev: "25.1.0"
     hooks:
       - id: "black"
 
@@ -56,7 +56,7 @@ repos:
       - id: "editorconfig-checker"
 
   - repo: "https://github.com/python-jsonschema/check-jsonschema"
-    rev: "0.31.0"
+    rev: "0.31.1"
     hooks:
       - id: "check-dependabot"
       - id: "check-github-workflows"
diff --git a/feedparser/encodings.py b/feedparser/encodings.py
index da8f0a31..e5741fb4 100644
--- a/feedparser/encodings.py
+++ b/feedparser/encodings.py
@@ -55,11 +55,11 @@ def lazy_chardet_encoding(data):
 
 # Each marker represents some of the characters of the opening XML
 # processing instruction ('<?xm') in the specified encoding.
-EBCDIC_MARKER = b"\x4C\x6F\xA7\x94"
-UTF16BE_MARKER = b"\x00\x3C\x00\x3F"
-UTF16LE_MARKER = b"\x3C\x00\x3F\x00"
-UTF32BE_MARKER = b"\x00\x00\x00\x3C"
-UTF32LE_MARKER = b"\x3C\x00\x00\x00"
+EBCDIC_MARKER = b"\x4c\x6f\xa7\x94"
+UTF16BE_MARKER = b"\x00\x3c\x00\x3f"
+UTF16LE_MARKER = b"\x3c\x00\x3f\x00"
+UTF32BE_MARKER = b"\x00\x00\x00\x3c"
+UTF32LE_MARKER = b"\x3c\x00\x00\x00"
 
 ZERO_BYTES = b"\x00\x00"