diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index dff9649b7..942927c39 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -64,6 +64,7 @@ lang_arg_kwargs = {
     'rust_args',
     'vala_args',
     'cs_args',
+    'cython_args',
 }
 
 vala_kwargs = {'vala_header', 'vala_gir', 'vala_vapi'}
diff --git a/mesonbuild/compilers/compilers.py b/mesonbuild/compilers/compilers.py
index 361f5d6d0..cdb9f1c70 100644
--- a/mesonbuild/compilers/compilers.py
+++ b/mesonbuild/compilers/compilers.py
@@ -64,6 +64,7 @@ lang_suffixes = {
     'cs': ('cs',),
     'swift': ('swift',),
     'java': ('java',),
+    'cython': ('pyx', ),
 }  # type: T.Dict[str, T.Tuple[str, ...]]
 all_languages = lang_suffixes.keys()
 cpp_suffixes = lang_suffixes['cpp'] + ('h',)  # type: T.Tuple[str, ...]
@@ -97,6 +98,7 @@ CFLAGS_MAPPING: T.Mapping[str, str] = {
     'd': 'DFLAGS',
     'vala': 'VALAFLAGS',
     'rust': 'RUSTFLAGS',
+    'cython': 'CYTHONFLAGS',
 }
 
 CEXE_MAPPING: T.Mapping = {