diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9bc541cb..eb54e9b9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       # Reduce amount of data cached
-      CARGO_PROFILE_DEV_DEBUG=line-tables-only
+      CARGO_PROFILE_DEV_DEBUG: line-tables-only
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4
diff --git a/.github/workflows/rust-next.yml b/.github/workflows/rust-next.yml
index afd8bb5d..5f73f690 100644
--- a/.github/workflows/rust-next.yml
+++ b/.github/workflows/rust-next.yml
@@ -30,7 +30,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       # Reduce amount of data cached
-      CARGO_PROFILE_DEV_DEBUG=line-tables-only
+      CARGO_PROFILE_DEV_DEBUG: line-tables-only
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4