diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 93a7af04..e8c2eb4d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,6 +19,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
+  CARGO_UNSTABLE_SPARSE_REGISTRY: "true"
 
 jobs:
   build:
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 1b86a22a..73950629 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -8,6 +8,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
+  CARGO_UNSTABLE_SPARSE_REGISTRY: "true"
 
 jobs:
   test: