diff --git a/src/univers/version_constraint.py b/src/univers/version_constraint.py
index 2b782037..2613a487 100644
--- a/src/univers/version_constraint.py
+++ b/src/univers/version_constraint.py
@@ -225,7 +225,7 @@ def split(string):
                 # "<<2.3" and ">>2.3" in VERS constraints which are explicitly not supported in VERS.
                 elif version and version[0] in "<>!=*":
                     raise ValueError(f"Unknown comparator in constraint: {constraint_string!r}")
-                
+
                 return comparator, version
 
         # default to equality
diff --git a/src/univers/version_range.py b/src/univers/version_range.py
index e25a355c..c50bc87c 100644
--- a/src/univers/version_range.py
+++ b/src/univers/version_range.py
@@ -1016,7 +1016,7 @@ class EbuildVersionRange(VersionRange):
 
 
 class AlpineLinuxVersionRange(VersionRange):
-    scheme = "alpine"
+    scheme = "apk"
     version_class = versions.AlpineLinuxVersion
 
 
diff --git a/tests/test_version_constraint.py b/tests/test_version_constraint.py
index 34c1450e..9997b7c7 100644
--- a/tests/test_version_constraint.py
+++ b/tests/test_version_constraint.py
@@ -88,10 +88,11 @@ def test_invert_opertaion(original, inverted):
     else:
         assert constraint.invert() is None
 
+
 @pytest.mark.parametrize("spec", ["<<2.3", ">>2.3"])
 def test_invalid_vers_comparator_prefixes(spec):
     with pytest.raises(ValueError, match="Unknown comparator"):
         VersionConstraint.from_string(
             string=spec,
             version_class=versions.SemverVersion,
-        )
\ No newline at end of file
+        )
diff --git a/tests/test_version_range.py b/tests/test_version_range.py
index fc84188c..b2cb3c4a 100644
--- a/tests/test_version_range.py
+++ b/tests/test_version_range.py
@@ -220,6 +220,13 @@ def test_AlpineLinuxVersionRange_from_versions():
     assert version_range == expected
 
 
+def test_AlpineLinuxVersionRange_has_apk_scheme():
+    sequence = ["3.18.0", "2.14.9-r1", "3.0.0"]
+    expected = "vers:apk/2.14.9-r1|3.0.0|3.18.0"
+    version_range = AlpineLinuxVersionRange.from_versions(sequence).to_string()
+    assert version_range == expected
+
+
 def test_VersionRange_from_versions_with_empty_constraints():
     sequence = []
     expected = None