diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 15d3b52..d163ad0 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
 - repo: https://github.com/executablebooks/mdformat
-  rev: 00812cd1850e41aae5c0916645b4b7404f538e8c  # frozen: 0.7.19
+  rev: ff29be1a1ba8029d9375882aa2c812b62112a593  # frozen: 0.7.22
   hooks:
   - id: mdformat
     additional_dependencies:
@@ -16,11 +16,11 @@ repos:
     - flake8-builtins
     - flake8-comprehensions
 - repo: https://github.com/PyCQA/isort
-  rev: c235f5e450b4b84e58d114ed4c589cbf454175a3  # frozen: 5.13.2
+  rev: 0a0b7a830386ba6a31c2ec8316849ae4d1b8240d  # frozen: 6.0.0
   hooks:
   - id: isort
 - repo: https://github.com/psf/black
-  rev: 1b2427a2b785cc4aac97c19bb4b9a0de063f9547  # frozen: 24.10.0
+  rev: 8a737e727ac5ab2f1d4cf5876720ed276dc8dc4b  # frozen: 25.1.0
   hooks:
   - id: black
 - repo: https://github.com/pre-commit/pre-commit-hooks
@@ -42,7 +42,7 @@ repos:
     - flake8-builtins
     - flake8-comprehensions
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: f56614daa94d5cd733d3b7004c5df9caad267b4a  # frozen: v1.13.0
+  rev: bbc3dc1f890007061f18f17e2334f216ea9e5df7  # frozen: v1.14.1
   hooks:
   - id: mypy
     args: ["--scripts-are-modules"]
diff --git a/src/tomli_w/_writer.py b/src/tomli_w/_writer.py
index b1acd3f..fb4e5b8 100644
--- a/src/tomli_w/_writer.py
+++ b/src/tomli_w/_writer.py
@@ -21,11 +21,11 @@
 COMPACT_ESCAPES = MappingProxyType(
     {
         "\u0008": "\\b",  # backspace
-        "\u000A": "\\n",  # linefeed
-        "\u000C": "\\f",  # form feed
-        "\u000D": "\\r",  # carriage return
+        "\u000a": "\\n",  # linefeed
+        "\u000c": "\\f",  # form feed
+        "\u000d": "\\r",  # carriage return
         "\u0022": '\\"',  # quote
-        "\u005C": "\\\\",  # backslash
+        "\u005c": "\\\\",  # backslash
     }
 )