diff --git a/493_wrf-python/Cartopy-0.24.1-foss-2024a.eb b/493_wrf-python/Cartopy-0.24.1-foss-2024a.eb
index 7fdc81a..cc42b45 100644
--- a/493_wrf-python/Cartopy-0.24.1-foss-2024a.eb
+++ b/493_wrf-python/Cartopy-0.24.1-foss-2024a.eb
@@ -8,6 +8,9 @@ description = """Cartopy is a Python package designed to make drawing maps for d
 
 toolchain = {'name': 'foss', 'version': '2024a'}
 
+builddependencies = [
+    ('Cython', '3.0.10'),
+]
 dependencies = [
     ('Python', '3.12.3'),
     ('Python-bundle-PyPI', '2024.06'),
@@ -42,7 +45,7 @@ exts_list = [
         'checksums': ['4caec82fd8dd096feba8217858068bacb2a3b5950f43c048c6dc32a3489d5af1'],
     }),
     (name, version, {
-        'preinstallopts': """sed -i 's/dynamic = \["version"\]/version = "%(version)s"/g' pyproject.toml && """,
+        'preinstallopts': r"sed -i 's/dynamic = \[\"version\"\]/version = \"%(version)s\"/g' pyproject.toml && ",
         'sources': ['cartopy-%(version)s.tar.gz'],
         'checksums': ['01c910d5634c69a7efdec46e0a17d473d2328767f001d4dc0b5c4b48e585c8bd'],
     }),