diff --git a/.env.sample b/.env.sample
index 31f79cf3..a974b5cc 100644
--- a/.env.sample
+++ b/.env.sample
@@ -5,10 +5,11 @@ DUNE_API_KEY=
 
 # Safe Transaction Service Requirements.
 SAFE_ADDRESS=0xA03be496e67Ec29bC62F01a428683D7F9c204930
-INFURA_KEY=
 NETWORK=mainnet
 PROPOSER_PK=
 
+NODE_URL=
+
 # Slack Bot Credentials
 SLACK_TOKEN=
 SLACK_CHANNEL=
diff --git a/.github/workflows/pull-request.yaml b/.github/workflows/pull-request.yaml
index 4244b3a0..43265093 100644
--- a/.github/workflows/pull-request.yaml
+++ b/.github/workflows/pull-request.yaml
@@ -26,6 +26,3 @@ jobs:
       - name: Unit Tests
         run:
           python -m pytest tests/unit
-        env:
-          # We make a rinkeby request in one unit test
-          INFURA_KEY: ${{ secrets.INFURA_KEY }}
diff --git a/src/constants.py b/src/constants.py
index d1d9d1e4..13cdf950 100644
--- a/src/constants.py
+++ b/src/constants.py
@@ -28,20 +28,16 @@
 SAFE_ADDRESS = Web3.to_checksum_address(
     ENV.get("SAFE_ADDRESS", "0xA03be496e67Ec29bC62F01a428683D7F9c204930")
 )
-# Found this exposed infura key on https://rpc.info/
-INFURA_KEY = ENV.get("INFURA_KEY", "9aa3d95b3bc440fa88ea12eaa4456161")
+
 NETWORK_STRING = ENV.get("NETWORK", "mainnet")
-NODE_URL = f"https://{NETWORK_STRING}.infura.io/v3/{INFURA_KEY}"
+NODE_URL = ENV.get("NODE_URL")
 NETWORK = {
     "mainnet": EthereumNetwork.MAINNET,
     "gnosis": EthereumNetwork.GNOSIS,
-    "goerli": EthereumNetwork.GOERLI,
 }[NETWORK_STRING]
 SHORT_NAME = {
     "mainnet": "eth",
-    "rinkeby": "rin",
     "gnosis": "gno",
-    "goerli": "gor",
 }[NETWORK_STRING]
 
 CSV_APP_HASH = "Qme49gESuwpSvwANmEqo34yfCkzyQehooJ5yL7aHmKJnpZ"
diff --git a/src/fetch/transfer_file.py b/src/fetch/transfer_file.py
index 0e0f40a1..1381c3e2 100644
--- a/src/fetch/transfer_file.py
+++ b/src/fetch/transfer_file.py
@@ -69,6 +69,8 @@ def auto_propose(
     # Check for required env vars early
     # so not to wait for query execution to realize it's not available.
     signing_key = os.environ["PROPOSER_PK"]
+
+    assert NODE_URL is not None, "NODE_URL env variable not set!"
     client = EthereumClient(URI(NODE_URL))
 
     log_saver.print(Transfer.summarize(transfers), category=Category.TOTALS)