diff --git a/.github/workflows/Downgrade-CI.yml b/.github/workflows/Downgrade-CI.yml
index 0f384ac0..e2f3c95f 100644
--- a/.github/workflows/Downgrade-CI.yml
+++ b/.github/workflows/Downgrade-CI.yml
@@ -18,7 +18,7 @@ jobs:
           version: 1
           arch: x64
       - run: julia -e 'using Pkg; pkg"add CompatHelperLocal"'
-      - run: julia -e 'using Pkg; pkg"add AbstractGPs#master"'
+      - run: julia -e 'using Pkg; pkg"add ."'
       - if: ${{ always() }}
         id: genmat
         run: |
@@ -37,5 +37,5 @@ jobs:
           version: 1
           arch: x64
       - run: julia -e 'using Pkg; pkg"add CompatHelperLocal"'
-      - run: julia -e 'using Pkg; pkg"add AbstractGPs#master"'
+      - run: julia -e 'using Pkg; pkg"add ."'
       - run: julia -e 'import CompatHelperLocal as CHL; import AbstractGPs; CHL.test_compats_combinations(AbstractGPs, [${{ matrix.compats }}])'