diff --git a/spec/libsass-closed-issues/issue_1650/negative/expected_output-dart-sass.css b/spec/libsass-closed-issues/issue_1650/negative/expected_output-dart-sass.css
index 533df1b3ce..2bce470869 100644
--- a/spec/libsass-closed-issues/issue_1650/negative/expected_output-dart-sass.css
+++ b/spec/libsass-closed-issues/issue_1650/negative/expected_output-dart-sass.css
@@ -2,6 +2,6 @@
 :nth-of-type(2n- 1),
 :nth-of-type(2n -1),
 :nth-of-type(2n - 1),
-:nth-of-type(2n - 1 ) {
+:nth-of-type(2n - 1) {
   color: red;
 }
diff --git a/spec/libsass-closed-issues/issue_1650/positive/expected_output-dart-sass.css b/spec/libsass-closed-issues/issue_1650/positive/expected_output-dart-sass.css
index 0c53c2df12..220b9d6903 100644
--- a/spec/libsass-closed-issues/issue_1650/positive/expected_output-dart-sass.css
+++ b/spec/libsass-closed-issues/issue_1650/positive/expected_output-dart-sass.css
@@ -2,6 +2,6 @@
 :nth-of-type(2n+ 1),
 :nth-of-type(2n +1),
 :nth-of-type(2n + 1),
-:nth-of-type(2n + 1 ) {
+:nth-of-type(2n + 1) {
   color: red;
 }
diff --git a/spec/libsass-closed-issues/issue_2000/options.yml b/spec/libsass-closed-issues/issue_2000/options.yml
deleted file mode 100644
index 936f9686e9..0000000000
--- a/spec/libsass-closed-issues/issue_2000/options.yml
+++ /dev/null
@@ -1,3 +0,0 @@
----
-:todo:
-- dart-sass
diff --git a/spec/libsass-todo-issues/issue_2055/expected_output-dart-sass.css b/spec/libsass-todo-issues/issue_2055/expected_output-dart-sass.css
new file mode 100644
index 0000000000..3b1517528f
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_2055/expected_output-dart-sass.css
@@ -0,0 +1,11 @@
+:not(.thing) {
+  color: red;
+}
+
+:not(.thing[disabled]):not([disabled]:has(:not(.thing[disabled]):not([disabled]:not(.thing[disabled])))):not([disabled]:not(.thing[disabled]):not([disabled]:has(:not(.thing[disabled]):not([disabled]:not(.thing[disabled]))))) {
+  background: blue;
+}
+
+:has(:not(.thing[disabled]):not([disabled]:has(:not(.thing[disabled]):not([disabled]:not(.thing[disabled])))):not([disabled]:not(.thing[disabled]):not([disabled]:has(:not(.thing[disabled]):not([disabled]:not(.thing[disabled])))))) {
+  background: blue;
+}
diff --git a/spec/libsass-todo-issues/issue_2055/options.yml b/spec/libsass-todo-issues/issue_2055/options.yml
deleted file mode 100644
index 936f9686e9..0000000000
--- a/spec/libsass-todo-issues/issue_2055/options.yml
+++ /dev/null
@@ -1,3 +0,0 @@
----
-:todo:
-- dart-sass
diff --git a/spec/libsass-todo-tests/12_pseudo_classes_and_elements/expected_output.css b/spec/libsass-todo-tests/12_pseudo_classes_and_elements/expected_output.css
index b18f00fade..8b1eee7984 100644
--- a/spec/libsass-todo-tests/12_pseudo_classes_and_elements/expected_output.css
+++ b/spec/libsass-todo-tests/12_pseudo_classes_and_elements/expected_output.css
@@ -14,9 +14,6 @@ a b :first-child ::after, a b :nth-of-type(-2n+1) ::after {
 a b :first-child :not(.foo), a b :nth-of-type(-2n+1) :not(.foo) {
   hoo: boo;
 }
-a b :first-child , a b :nth-of-type(-2n+1)  {
-  hoo: boo;
-}
 a b :first-child a, a b :nth-of-type(-2n+1) a {
   b: c;
 }
diff --git a/spec/libsass-todo-tests/12_pseudo_classes_and_elements/input.scss b/spec/libsass-todo-tests/12_pseudo_classes_and_elements/input.scss
index c714abbef5..31d58a445d 100644
--- a/spec/libsass-todo-tests/12_pseudo_classes_and_elements/input.scss
+++ b/spec/libsass-todo-tests/12_pseudo_classes_and_elements/input.scss
@@ -12,8 +12,6 @@ a b {
     :not(.foo) {
       hoo: boo;
     }
-    // the following is not actually valid, but sass accepts it
-    :not(:not(:not(.foo[bleeble="blabble"] > .hello, .gluxbux))) { hoo: boo; }
     a { b: c; }
   }
 }
\ No newline at end of file
diff --git a/spec/libsass-todo-tests/12_pseudo_classes_and_elements/options.yml b/spec/libsass-todo-tests/12_pseudo_classes_and_elements/options.yml
deleted file mode 100644
index 936f9686e9..0000000000
--- a/spec/libsass-todo-tests/12_pseudo_classes_and_elements/options.yml
+++ /dev/null
@@ -1,3 +0,0 @@
----
-:todo:
-- dart-sass
diff --git a/spec/selector-functions/extend/simple/options.yml b/spec/selector-functions/extend/simple/options.yml
deleted file mode 100644
index 936f9686e9..0000000000
--- a/spec/selector-functions/extend/simple/options.yml
+++ /dev/null
@@ -1,3 +0,0 @@
----
-:todo:
-- dart-sass
diff --git a/spec/selector-functions/replace/options.yml b/spec/selector-functions/replace/options.yml
deleted file mode 100644
index 936f9686e9..0000000000
--- a/spec/selector-functions/replace/options.yml
+++ /dev/null
@@ -1,3 +0,0 @@
----
-:todo:
-- dart-sass