diff --git a/.github/workflow-templates/test-dapp.yml b/.github/workflow-templates/test-dapp.yml
index 0ce03a1f373..30cc8b4d91d 100644
--- a/.github/workflow-templates/test-dapp.yml
+++ b/.github/workflow-templates/test-dapp.yml
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2
diff --git a/.github/workflows/test-dapp-autoswap.yml b/.github/workflows/test-dapp-autoswap.yml
index 36965660124..9133db2ec19 100644
--- a/.github/workflows/test-dapp-autoswap.yml
+++ b/.github/workflows/test-dapp-autoswap.yml
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2
diff --git a/.github/workflows/test-dapp-card-store.yml b/.github/workflows/test-dapp-card-store.yml
index 486ad3d2ba9..31f2b881d5e 100644
--- a/.github/workflows/test-dapp-card-store.yml
+++ b/.github/workflows/test-dapp-card-store.yml
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2
diff --git a/.github/workflows/test-dapp-fungible-faucet.yml b/.github/workflows/test-dapp-fungible-faucet.yml
index 790107c66cf..b01747ca14c 100644
--- a/.github/workflows/test-dapp-fungible-faucet.yml
+++ b/.github/workflows/test-dapp-fungible-faucet.yml
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2
diff --git a/.github/workflows/test-dapp-oracle.yml b/.github/workflows/test-dapp-oracle.yml
index 11873634a05..b9d5cb9253a 100644
--- a/.github/workflows/test-dapp-oracle.yml
+++ b/.github/workflows/test-dapp-oracle.yml
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2
diff --git a/.github/workflows/test-dapp-otc.yml b/.github/workflows/test-dapp-otc.yml
index 6a31ab2863b..8d3e3bb374e 100644
--- a/.github/workflows/test-dapp-otc.yml
+++ b/.github/workflows/test-dapp-otc.yml
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2
diff --git a/.github/workflows/test-dapp-pegasus.yml.DISABLED b/.github/workflows/test-dapp-pegasus.yml.DISABLED
index a083c0151a3..d276a36f433 100644
--- a/.github/workflows/test-dapp-pegasus.yml.DISABLED
+++ b/.github/workflows/test-dapp-pegasus.yml.DISABLED
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2
diff --git a/.github/workflows/test-dapp-simple-exchange.yml b/.github/workflows/test-dapp-simple-exchange.yml
index a16605fd732..0bf9174f668 100644
--- a/.github/workflows/test-dapp-simple-exchange.yml
+++ b/.github/workflows/test-dapp-simple-exchange.yml
@@ -60,7 +60,7 @@ jobs:
     - name: yarn link
       run: |
         yarn link-cli ~/bin/agoric
-        echo "::add-path::/home/runner/bin"
+        echo "/home/runner/bin" >> $GITHUB_PATH
 
     - name: Check out dapp
       uses: actions/checkout@v2