diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0141b14..bc1d704 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,18 +7,18 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-20.04
+          - ubuntu-22.04
           - windows-2019
           - macos-11
         dc:
-          - dmd-2.103.1
+          - dmd-2.105.2
           - dmd-2.100.0
-          - ldc-1.32.2
+          - ldc-1.34.0
           - ldc-1.28.0
 
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install D compiler
         uses: dlang-community/setup-dlang@v1.3.0
diff --git a/dub.selections.json b/dub.selections.json
index 2560b31..b702266 100644
--- a/dub.selections.json
+++ b/dub.selections.json
@@ -2,6 +2,6 @@
 	"fileVersion": 1,
 	"versions": {
 		"test_allocator": "0.3.4",
-		"unit-threaded": "2.0.2"
+		"unit-threaded": "2.1.7"
 	}
 }
diff --git a/tests/ut/vector.d b/tests/ut/vector.d
index 393df2b..fe9b0f5 100644
--- a/tests/ut/vector.d
+++ b/tests/ut/vector.d
@@ -366,6 +366,22 @@ import test_allocator;
     vec.capacity.shouldBeGreaterThan(6);
 }
 
+@("TestAllocator shrink with length range invalidation")
+@safe unittest {
+    static TestAllocator allocator;
+
+    scope vec = vector(&allocator, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
+    vec.capacity.should == 10;
+    scope rng = vec.range;
+
+    foreach(i; 0 .. 5)
+        rng.popFront;
+    rng.empty.should == false;
+
+    () @trusted { vec.shrink(5); }();
+    rng.empty.should == true;
+}
+
 @("TestAllocator copy")
 @safe unittest {
     static TestAllocator allocator;