diff --git a/.github/workflows/downgrade-compat.yml b/.github/workflows/downgrade-compat.yml
new file mode 100644
index 00000000..94c6971e
--- /dev/null
+++ b/.github/workflows/downgrade-compat.yml
@@ -0,0 +1,31 @@
+name: Downgrade Compat
+
+on:
+  pull_request:
+  push:
+  workflow_dispatch:
+
+jobs:
+  downgrade-compat:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        julia-version: ["1.10", "1"]
+
+    steps:
+      - uses: actions/checkout@v5
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.julia-version }}
+      - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-downgrade-compat@v2
+        with:
+          mode: "deps"
+          projects: "., test"
+          julia_version: ${{ matrix.julia-version }}
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+        with:
+          allow_reresolve: false
+          force_latest_compatible_version: false
diff --git a/Project.toml b/Project.toml
index 37c298bb..22b20989 100644
--- a/Project.toml
+++ b/Project.toml
@@ -31,16 +31,16 @@ DynamicExpressionsZygoteExt = "Zygote"
 
 [compat]
 Bumper = "0.6"
-ChainRulesCore = "1"
+ChainRulesCore = "1.25.1"
 Compat = "4.16"
 DispatchDoctor = "0.4"
 Interfaces = "0.3"
 LoopVectorization = "0.12"
-MacroTools = "0.4, 0.5"
+MacroTools = "0.5.16"
 Optim = "1, 2"
 NLSolversBase = "7, 8"
-PrecompileTools = "1"
-Reexport = "1"
+PrecompileTools = "1.2.1"
+Reexport = "1.2.2"
 SymbolicUtils = "4"
 Zygote = "0.7"
 julia = "1.10"
diff --git a/test/Project.toml b/test/Project.toml
index 6f47e280..e4b346d5 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -28,6 +28,8 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 [compat]
 Aqua = "0.8"
 JET = "0.9, 0.10"
+TestItems = "1"
+TestItemRunner = "1"
 
 [preferences.DynamicExpressions]
 dispatch_doctor_codegen_level = "min"