diff --git a/.github/workflows/downgrade.yml b/.github/workflows/downgrade.yml
new file mode 100644
index 0000000..e3a2b80
--- /dev/null
+++ b/.github/workflows/downgrade.yml
@@ -0,0 +1,29 @@
+name: Downgrade
+on:
+  pull_request:
+    branches: [master, main]
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches: [master, main]
+    paths-ignore:
+      - 'docs/**'
+env:
+  PYTHON: ~
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        version: ['1.10']
+    steps:
+      - uses: actions/checkout@v5
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/julia-downgrade-compat@v2
+        with:
+          skip: Pkg,TOML,InteractiveUtils,Random,LinearAlgebra
+      - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
diff --git a/Project.toml b/Project.toml
index 03bd738..f8bd0ac 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,7 @@ Distributions = "0.25"
 Graphs = "1"
 IterTools = "1.4"
 MetaGraphs = "0.7, 0.8"
-OMEinsum = "0.7, 0.8, 0.9"
+OMEinsum = "0.8, 0.9"
 PrettyTables = "2.2, 3"
 SimpleTraits = "0.9"
 SimpleValueGraphs = "0.4"