diff --git a/.github/workflows/check-problem-specs-is-current.yml b/.github/workflows/check-problem-specs-is-current.yml
new file mode 100644
index 0000000..f9a8870
--- /dev/null
+++ b/.github/workflows/check-problem-specs-is-current.yml
@@ -0,0 +1,21 @@
+name: Check Problem Specifications is Current
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize, ready_for_review]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  check_problem_specifications:
+    name: Check problem specifications
+    runs-on: ubuntu-24.04
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+
+      - name: Check problem-specifications is current
+        run: bin/check-problem-specs-is-current
diff --git a/bin/check-problem-specs-is-current b/bin/check-problem-specs-is-current
new file mode 100755
index 0000000..a0ecb4d
--- /dev/null
+++ b/bin/check-problem-specs-is-current
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+# Synopsis:
+# Verify that the problem-specifications submodule is up-to-date with the latest upstream commit.
+
+set -euo pipefail
+
+latest_commit="$(git ls-remote https://github.com/exercism/problem-specifications.git refs/heads/main | cut -f1)"
+
+if [[ -z "$latest_commit" ]]; then
+  echo "::error:: Could not determine latest upstream problem-specifications commit."
+  exit 1
+fi
+
+current_commit="$(git rev-parse HEAD:problem-specifications)"
+
+if [[ "$current_commit" != "$latest_commit" ]]; then
+  echo "::error:: The problem-specifications submodule is out of date. Update it to ${latest_commit}."
+  exit 1
+fi
+
+echo "The problem-specifications submodule is current at ${current_commit}."
diff --git a/problem-specifications b/problem-specifications
index 0ebef3c..99a6f01 160000
--- a/problem-specifications
+++ b/problem-specifications
@@ -1 +1 @@
-Subproject commit 0ebef3c03248e718b261815dc703c1a1600630f0
+Subproject commit 99a6f01317bb993124cbe8bf8027a1cfdf2dc537