diff --git a/exercises/all-your-base/all_your_base.py b/exercises/all-your-base/all_your_base.py
index e065fb4cb4..d0958b9db2 100644
--- a/exercises/all-your-base/all_your_base.py
+++ b/exercises/all-your-base/all_your_base.py
@@ -1,2 +1,2 @@
-def rebase(from_base, digits, to_base):
+def rebase(input_base, digits, output_base):
     pass
diff --git a/exercises/all-your-base/all_your_base_test.py b/exercises/all-your-base/all_your_base_test.py
index a103a4d85b..022d62f73a 100644
--- a/exercises/all-your-base/all_your_base_test.py
+++ b/exercises/all-your-base/all_your_base_test.py
@@ -3,7 +3,7 @@
 from all_your_base import rebase
 
 
-# Tests adapted from `problem-specifications//canonical-data.json` @ v1.1.0
+# Tests adapted from `problem-specifications//canonical-data.json` @ v2.3.0
 
 class AllYourBaseTests(unittest.TestCase):
 
@@ -43,15 +43,15 @@ def test_multiple_zeroes(self):
     def test_leading_zeros(self):
         self.assertEqual(rebase(7, [0, 6, 0], 10), [4, 2])
 
-    def test_first_base_is_one(self):
+    def test_input_base_is_one(self):
         with self.assertRaisesWithMessage(ValueError):
-            rebase(1, [], 10)
+            rebase(1, [0], 10)
 
-    def test_first_base_is_zero(self):
+    def test_input_base_is_zero(self):
         with self.assertRaisesWithMessage(ValueError):
             rebase(0, [], 10)
 
-    def test_first_base_is_negative(self):
+    def test_input_base_is_negative(self):
         with self.assertRaisesWithMessage(ValueError):
             rebase(-2, [1], 10)
 
@@ -63,15 +63,15 @@ def test_invalid_positive_digit(self):
         with self.assertRaisesWithMessage(ValueError):
             rebase(2, [1, 2, 1, 0, 1, 0], 10)
 
-    def test_second_base_is_one(self):
+    def test_output_base_is_one(self):
         with self.assertRaisesWithMessage(ValueError):
             rebase(2, [1, 0, 1, 0, 1, 0], 1)
 
-    def test_second_base_is_zero(self):
+    def test_output_base_is_zero(self):
         with self.assertRaisesWithMessage(ValueError):
             rebase(10, [7], 0)
 
-    def test_second_base_is_negative(self):
+    def test_output_base_is_negative(self):
         with self.assertRaisesWithMessage(ValueError):
             rebase(2, [1], -7)