diff --git a/library/fixed_point/qsharp.json b/library/fixed_point/qsharp.json
index 899e462aa5..976c27aa25 100644
--- a/library/fixed_point/qsharp.json
+++ b/library/fixed_point/qsharp.json
@@ -9,14 +9,6 @@
         "ref": "3195043",
         "path": "library/signed"
       }
-    },
-    "Unstable": {
-      "github": {
-        "owner": "Microsoft",
-        "repo": "qsharp",
-        "ref": "3195043",
-        "path": "library/unstable"
-      }
     }
   },
   "files": [
diff --git a/library/fixed_point/src/Operations.qs b/library/fixed_point/src/Operations.qs
index 436b7625d2..fdce658a96 100644
--- a/library/fixed_point/src/Operations.qs
+++ b/library/fixed_point/src/Operations.qs
@@ -6,7 +6,7 @@ import Init.PrepareFxP;
 import Facts.AssertPointPositionsIdenticalFxP, Facts.AssertFormatsAreIdenticalFxP, Facts.AssertAllZeroFxP;
 import Signed.Operations.Invert2sSI, Signed.Operations.MultiplySI, Signed.Operations.SquareSI;
 import Std.Arrays.Zipped;
-import Unstable.Arithmetic.RippleCarryTTKIncByLE;
+import Std.Arithmetic.RippleCarryTTKIncByLE;
 
 /// # Summary
 /// Adds a classical constant to a quantum fixed-point number.
diff --git a/library/signed/qsharp.json b/library/signed/qsharp.json
index b2f24b1e73..c8c3b80f5a 100644
--- a/library/signed/qsharp.json
+++ b/library/signed/qsharp.json
@@ -2,14 +2,6 @@
   "author": "Microsoft",
   "license": "MIT",
   "dependencies": {
-    "Unstable": {
-      "github": {
-        "owner": "Microsoft",
-        "repo": "qsharp",
-        "ref": "3195043",
-        "path": "library/unstable"
-      }
-    },
     "Qtest": {
       "github": {
         "owner": "Microsoft",
diff --git a/library/signed/src/Comparison.qs b/library/signed/src/Comparison.qs
index 7246acdd5a..49a16ad2d6 100644
--- a/library/signed/src/Comparison.qs
+++ b/library/signed/src/Comparison.qs
@@ -3,7 +3,7 @@
 
 import Std.Arrays.Tail, Std.Arrays.Zipped, Std.Arrays.Most, Std.Arrays.Rest;
 import Std.Diagnostics.Fact;
-import Unstable.Arithmetic.ApplyIfGreaterLE;
+import Std.Arithmetic.ApplyIfGreaterLE;
 
 /// # Summary
 /// Wrapper for signed integer comparison: `result = xs > ys`.
diff --git a/library/signed/src/Operations.qs b/library/signed/src/Operations.qs
index f2d4d6da8a..929e4779eb 100644
--- a/library/signed/src/Operations.qs
+++ b/library/signed/src/Operations.qs
@@ -3,9 +3,8 @@
 
 import Std.Arrays.Tail, Std.Arrays.Most, Std.Arrays.Enumerated;
 import Utils.AndLadder;
-import Unstable.Arithmetic.RippleCarryTTKIncByLE;
+import Std.Arithmetic.RippleCarryTTKIncByLE, Std.Arithmetic.ApplyIfGreaterLE;
 import Std.Diagnostics.Fact;
-import Unstable.Arithmetic.ApplyIfGreaterLE;
 
 /// # Summary
 /// Square signed integer `xs` and store