diff --git a/methods.py b/methods.py
index 33ab894f924..8e6005a6ac4 100644
--- a/methods.py
+++ b/methods.py
@@ -975,13 +975,13 @@ def get_compiler_version(env):
     else:  # TODO: Implement for MSVC
         return None
     match = re.search(
-        "(?:(?<=version )|(?<=\) )|(?<=^))"
-        "(?P<major>\d+)"
-        "(?:\.(?P<minor>\d*))?"
-        "(?:\.(?P<patch>\d*))?"
-        "(?:-(?P<metadata1>[0-9a-zA-Z-]*))?"
-        "(?:\+(?P<metadata2>[0-9a-zA-Z-]*))?"
-        "(?: (?P<date>[0-9]{8}|[0-9]{6})(?![0-9a-zA-Z]))?",
+        r"(?:(?<=version )|(?<=\) )|(?<=^))"
+        r"(?P<major>\d+)"
+        r"(?:\.(?P<minor>\d*))?"
+        r"(?:\.(?P<patch>\d*))?"
+        r"(?:-(?P<metadata1>[0-9a-zA-Z-]*))?"
+        r"(?:\+(?P<metadata2>[0-9a-zA-Z-]*))?"
+        r"(?: (?P<date>[0-9]{8}|[0-9]{6})(?![0-9a-zA-Z]))?",
         version,
     )
     if match is not None:
diff --git a/platform/linuxbsd/detect.py b/platform/linuxbsd/detect.py
index 54351757cdf..3e1de53a455 100644
--- a/platform/linuxbsd/detect.py
+++ b/platform/linuxbsd/detect.py
@@ -442,7 +442,7 @@ def configure(env: "Environment"):
         linker_version_str = subprocess.check_output(
             [env.subst(env["LINK"]), "-Wl,--version"] + env.subst(env["LINKFLAGS"])
         ).decode("utf-8")
-        gnu_ld_version = re.search("^GNU ld [^$]*(\d+\.\d+)$", linker_version_str, re.MULTILINE)
+        gnu_ld_version = re.search(r"^GNU ld [^$]*(\d+\.\d+)$", linker_version_str, re.MULTILINE)
         if not gnu_ld_version:
             print(
                 "Warning: Creating export template binaries enabled for PCK embedding is currently only supported with GNU ld, not gold, LLD or mold."