From 0cb92bc077d226c7a82ae62562f64fb83066a801 Mon Sep 17 00:00:00 2001
From: Julie Kwok <julie.kwok@chairish.com>
Date: Tue, 13 Jan 2026 14:26:51 +1300
Subject: [PATCH] fix: Fixes invalid escape sequence syntax error in
 VERSION_PATTERN

---
 src/amplitude_experiment/evaluation/semantic_version.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/amplitude_experiment/evaluation/semantic_version.py b/src/amplitude_experiment/evaluation/semantic_version.py
index c9f7b48..5ca7f0a 100644
--- a/src/amplitude_experiment/evaluation/semantic_version.py
+++ b/src/amplitude_experiment/evaluation/semantic_version.py
@@ -13,7 +13,7 @@
 PRERELEASE_REGEX = r'(-(([-\w]+\.?)*))?'
 
 # Version pattern should be major.minor(.patchAndPreRelease) where .patchAndPreRelease is optional
-VERSION_PATTERN = f'^{MAJOR_MINOR_REGEX}(\.{PATCH_REGEX}{PRERELEASE_REGEX})?$'
+VERSION_PATTERN = fr'^{MAJOR_MINOR_REGEX}(\.{PATCH_REGEX}{PRERELEASE_REGEX})?$'
 
 @dataclass
 class SemanticVersion: