diff --git a/ds-test/arrays.c b/ds-test/arrays.c
index b1c21c9..5705f90 100644
--- a/ds-test/arrays.c
+++ b/ds-test/arrays.c
@@ -15,6 +15,6 @@ int main(void)
 		printf("object %p\n", it.value);
 	}
 
-	b_array_release(array);
+	b_array_unref(array);
 	return 0;
 }
diff --git a/ds-test/ds-units.c b/ds-test/ds-units.c
index 157054f..d7b3020 100644
--- a/ds-test/ds-units.c
+++ b/ds-test/ds-units.c
@@ -9,7 +9,7 @@ static void test_string_create(CuTest *tc)
 	CuAssertIntEquals(tc, 0, b_string_get_size(str, B_STRLEN_NORMAL));
 	CuAssertStrEquals(tc, "", b_string_ptr(str));
 
-	b_string_release(str);
+	b_string_unref(str);
 
 	str = b_string_create_from_c('A', 8);
 
@@ -17,7 +17,7 @@ static void test_string_create(CuTest *tc)
 	CuAssertIntEquals(tc, 8, b_string_get_size(str, B_STRLEN_NORMAL));
 	CuAssertStrEquals(tc, "AAAAAAAA", b_string_ptr(str));
 
-	b_string_release(str);
+	b_string_unref(str);
 
 	str = b_string_create_from_cstr("Hello, world!");
 
@@ -25,7 +25,7 @@ static void test_string_create(CuTest *tc)
 	CuAssertIntEquals(tc, 13, b_string_get_size(str, B_STRLEN_NORMAL));
 	CuAssertStrEquals(tc, "Hello, world!", b_string_ptr(str));
 
-	b_string_release(str);
+	b_string_unref(str);
 }
 
 static void test_string_length(CuTest *tc)
@@ -36,7 +36,7 @@ static void test_string_length(CuTest *tc)
 	CuAssertIntEquals(tc, 13, b_string_get_size(s, B_STRLEN_IGNORE_ESC));
 	CuAssertIntEquals(tc, 20, b_string_get_size(s, B_STRLEN_NORMAL));
 
-	b_string_release(s);
+	b_string_unref(s);
 }
 
 CuSuite *get_all_tests(void)
diff --git a/ds-test/numbers.c b/ds-test/numbers.c
index 43d3160..c777734 100644
--- a/ds-test/numbers.c
+++ b/ds-test/numbers.c
@@ -6,6 +6,6 @@ int main(void)
 	b_number *number = b_number_create_float(6.8);
 
 	printf("number=%zd\n", B_NUMBER_IVAL(number));
-	b_number_release(number);
+	b_number_unref(number);
 	return 0;
 }
diff --git a/ds-test/strings.c b/ds-test/strings.c
index e347741..3a495eb 100644
--- a/ds-test/strings.c
+++ b/ds-test/strings.c
@@ -26,7 +26,7 @@ int main(void)
 	       b_string_get_capacity(str));
 	printf("-------------\n");
 
-	b_string_release(str);
+	b_string_unref(str);
 
 	b_stringstream strv;
 	b_stringstream_begin_dynamic(&strv);
diff --git a/ds-test/trees.c b/ds-test/trees.c
index 002e12a..b25ca9d 100644
--- a/ds-test/trees.c
+++ b/ds-test/trees.c
@@ -33,7 +33,7 @@ int main(void)
 	b_dict_foreach(&it, dict)
 	{
 		printf("item %zu: %s=%d\n", it.i, b_string_ptr(it.key),
-		       b_number_get_int(B_NUMBER(it.value)));
+		       b_number_get_int(it.value));
 	}
 
 	b_tree *tree = b_tree_create();
@@ -112,8 +112,8 @@ int main(void)
 		printf("%d\n", item->value);
 	}
 
-	b_tree_release(tree);
-	b_dict_release(dict);
+	b_tree_unref(tree);
+	b_dict_unref(dict);
 
 	return 0;
 }
diff --git a/ds-test/uuids.c b/ds-test/uuids.c
index 01535f0..f4977b6 100644
--- a/ds-test/uuids.c
+++ b/ds-test/uuids.c
@@ -9,6 +9,6 @@ int main(void)
 	b_uuid_to_cstr(uuid, str);
 	printf("%s\n", str);
 
-	b_uuid_release(uuid);
+	b_uuid_unref(uuid);
 	return 0;
 }