diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad84a7b3..8c610339 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ releases are available on [PyPI](https://pypi.org/project/pytask) and
- {pull}`703` fixes {issue}`701` by allowing `--capture tee-sys` again.
- {pull}`704` adds the `--explain` flag to show why tasks would be executed. Closes {issue}`466`.
+- {pull}`706` disables syntax highlighting for platform version information in session header.
## 0.5.5 - 2025-07-25
diff --git a/docs/source/_static/md/capture.md b/docs/source/_static/md/capture.md
index 0f41a9de..afc7e525 100644
--- a/docs/source/_static/md/capture.md
+++ b/docs/source/_static/md/capture.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 2 tasks.
diff --git a/docs/source/_static/md/clean-dry-run-directories.md b/docs/source/_static/md/clean-dry-run-directories.md
index 0451985f..063e8925 100644
--- a/docs/source/_static/md/clean-dry-run-directories.md
+++ b/docs/source/_static/md/clean-dry-run-directories.md
@@ -4,7 +4,7 @@
$ pytask clean --directories
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/clean-dry-run.md b/docs/source/_static/md/clean-dry-run.md
index e5b094be..4872c9e3 100644
--- a/docs/source/_static/md/clean-dry-run.md
+++ b/docs/source/_static/md/clean-dry-run.md
@@ -4,7 +4,7 @@
$ pytask clean
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/collect-nodes.md b/docs/source/_static/md/collect-nodes.md
index fac4a7cd..5ba213ff 100644
--- a/docs/source/_static/md/collect-nodes.md
+++ b/docs/source/_static/md/collect-nodes.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/collect.md b/docs/source/_static/md/collect.md
index 5afdddf6..b7a2adb3 100644
--- a/docs/source/_static/md/collect.md
+++ b/docs/source/_static/md/collect.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/defining-dependencies-products.md b/docs/source/_static/md/defining-dependencies-products.md
index 161821e6..d991931c 100644
--- a/docs/source/_static/md/defining-dependencies-products.md
+++ b/docs/source/_static/md/defining-dependencies-products.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 2 task.
diff --git a/docs/source/_static/md/dry-run.md b/docs/source/_static/md/dry-run.md
index 07c10b41..2a0209ed 100644
--- a/docs/source/_static/md/dry-run.md
+++ b/docs/source/_static/md/dry-run.md
@@ -4,7 +4,7 @@
$ pytask --dry-run
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/explain.md b/docs/source/_static/md/explain.md
index f90fa425..0f7e8a54 100644
--- a/docs/source/_static/md/explain.md
+++ b/docs/source/_static/md/explain.md
@@ -4,7 +4,7 @@
$ pytask --explain
────────────────────────── Start pytask session ─────────────────────────
-Platform: darwin -- Python 3.12.0, pytask 0.5.6, pluggy 1.6.0
+Platform: darwin -- Python 3.12.0, pytask 0.5.6, pluggy 1.6.0
Root: /Users/pytask-dev/git/my_project
Collected 3 tasks.
diff --git a/docs/source/_static/md/migrating-from-scripts-to-pytask.md b/docs/source/_static/md/migrating-from-scripts-to-pytask.md
index 4f498035..4508d10a 100644
--- a/docs/source/_static/md/migrating-from-scripts-to-pytask.md
+++ b/docs/source/_static/md/migrating-from-scripts-to-pytask.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/pdb.md b/docs/source/_static/md/pdb.md
index 2131d5fb..c510ce7b 100644
--- a/docs/source/_static/md/pdb.md
+++ b/docs/source/_static/md/pdb.md
@@ -4,7 +4,7 @@
$ pytask --pdb
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/persist-executed.md b/docs/source/_static/md/persist-executed.md
index 6a2f0b86..f2d8ba0d 100644
--- a/docs/source/_static/md/persist-executed.md
+++ b/docs/source/_static/md/persist-executed.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/persist-persisted.md b/docs/source/_static/md/persist-persisted.md
index 5db81309..75f055ed 100644
--- a/docs/source/_static/md/persist-persisted.md
+++ b/docs/source/_static/md/persist-persisted.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/persist-skipped.md b/docs/source/_static/md/persist-skipped.md
index 8c563282..27cfbcab 100644
--- a/docs/source/_static/md/persist-skipped.md
+++ b/docs/source/_static/md/persist-skipped.md
@@ -4,7 +4,7 @@
$ pytask --verbose 2
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/profiling-tasks.md b/docs/source/_static/md/profiling-tasks.md
index f1212373..e906ecc5 100644
--- a/docs/source/_static/md/profiling-tasks.md
+++ b/docs/source/_static/md/profiling-tasks.md
@@ -4,7 +4,7 @@
$ pytask profile
───────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 18 task.
diff --git a/docs/source/_static/md/readme.md b/docs/source/_static/md/readme.md
index 7bfcd368..e0a2e096 100644
--- a/docs/source/_static/md/readme.md
+++ b/docs/source/_static/md/readme.md
@@ -4,7 +4,7 @@
$ pytask
──────────────────────────── Start pytask session ────────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/repeating-tasks.md b/docs/source/_static/md/repeating-tasks.md
index d4e357b9..4f461bc4 100644
--- a/docs/source/_static/md/repeating-tasks.md
+++ b/docs/source/_static/md/repeating-tasks.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 10 task.
diff --git a/docs/source/_static/md/show-locals.md b/docs/source/_static/md/show-locals.md
index 8352cb78..8152e69c 100644
--- a/docs/source/_static/md/show-locals.md
+++ b/docs/source/_static/md/show-locals.md
@@ -4,7 +4,7 @@
$ pytask --show-locals
──────────────────────────── Start pytask session ────────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/trace.md b/docs/source/_static/md/trace.md
index 0ab7edc2..fc1dda5b 100644
--- a/docs/source/_static/md/trace.md
+++ b/docs/source/_static/md/trace.md
@@ -4,7 +4,7 @@
$ pytask --trace
──────────────────────────── Start pytask session ────────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/try-first.md b/docs/source/_static/md/try-first.md
index bc71ba4b..3363b6b6 100644
--- a/docs/source/_static/md/try-first.md
+++ b/docs/source/_static/md/try-first.md
@@ -4,7 +4,7 @@
$ pytask -s
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 2 task.
diff --git a/docs/source/_static/md/try-last.md b/docs/source/_static/md/try-last.md
index 2abbe272..7e1e128b 100644
--- a/docs/source/_static/md/try-last.md
+++ b/docs/source/_static/md/try-last.md
@@ -4,7 +4,7 @@
$ pytask -s
────────────────────────── Start pytask session ────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 2 task.
diff --git a/docs/source/_static/md/warning.md b/docs/source/_static/md/warning.md
index 558af1ba..2295f900 100644
--- a/docs/source/_static/md/warning.md
+++ b/docs/source/_static/md/warning.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/docs/source/_static/md/write-a-task.md b/docs/source/_static/md/write-a-task.md
index 9f12c4eb..a8fe9f8f 100644
--- a/docs/source/_static/md/write-a-task.md
+++ b/docs/source/_static/md/write-a-task.md
@@ -4,7 +4,7 @@
$ pytask
────────────────────────── Start pytask session ─────────────────────────
-Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
+Platform: win32 -- Python 3.12.0, pytask 0.5.3, pluggy 1.3.0
Root: C:\Users\pytask-dev\git\my_project
Collected 1 task.
diff --git a/src/_pytask/logging.py b/src/_pytask/logging.py
index 62ab564f..ce4bd6cb 100644
--- a/src/_pytask/logging.py
+++ b/src/_pytask/logging.py
@@ -66,7 +66,8 @@ def pytask_log_session_header(session: Session) -> None:
console.rule("Start pytask session", style="default")
console.print(
f"Platform: {sys.platform} -- Python {platform.python_version()}, "
- f"pytask {_pytask.__version__}, pluggy {pluggy.__version__}"
+ f"pytask {_pytask.__version__}, pluggy {pluggy.__version__}",
+ highlight=False,
)
console.print(f"Root: {session.config['root']}")
if session.config["config"] is not None: