diff --git a/packages/synthetic-chain/src/lib/agd-lib.ts b/packages/synthetic-chain/src/lib/agd-lib.ts
index 68afb7c5..412f68ec 100644
--- a/packages/synthetic-chain/src/lib/agd-lib.ts
+++ b/packages/synthetic-chain/src/lib/agd-lib.ts
@@ -77,7 +77,8 @@ export const makeAgd = ({
     });
     const rw = freeze({
       /**
-       * TODO: gas
+       * @param {string[]} txArgs
+       * @param {{ chainId: string, from: string, yes?: boolean }} opts
        */
       tx: async (
         txArgs: string[],
@@ -95,6 +96,8 @@ export const makeAgd = ({
           ...[`--from`, from],
           'tx',
           ...['--broadcast-mode', 'block'],
+          ...['--gas', 'auto'],
+          ...['--gas-adjustment', '1.3'],
           ...txArgs,
           ...yesArg,
           ...outJson,
diff --git a/packages/synthetic-chain/src/lib/cliHelper.js b/packages/synthetic-chain/src/lib/cliHelper.js
index cc56d473..98f0e666 100644
--- a/packages/synthetic-chain/src/lib/cliHelper.js
+++ b/packages/synthetic-chain/src/lib/cliHelper.js
@@ -16,7 +16,14 @@ export const agd = {
     return JSON.parse(data);
   },
   tx: async (...params) => {
-    const newParams = ['tx', '-bblock', ...params, '-o json'];
+    const newParams = [
+      'tx',
+      '-bblock',
+      '--gas auto',
+      '--gas-adjustment 1.3',
+      ...params,
+      '-o json',
+    ];
     const data = await executeCommand(BINARY, newParams, { shell: true });
     return JSON.parse(data);
   },
diff --git a/packages/synthetic-chain/src/lib/commonUpgradeHelpers.js b/packages/synthetic-chain/src/lib/commonUpgradeHelpers.js
index ecbb422d..1c2e8db6 100644
--- a/packages/synthetic-chain/src/lib/commonUpgradeHelpers.js
+++ b/packages/synthetic-chain/src/lib/commonUpgradeHelpers.js
@@ -275,7 +275,6 @@ export const installBundle = async (addr, bundlePath) => {
     '--from',
     addr,
     '--keyring-backend=test',
-    '--gas=auto',
     '--chain-id',
     CHAINID,
     '-bblock',
@@ -301,8 +300,6 @@ export const submitProposal = async (
     '--from',
     VALIDATORADDR,
     '--keyring-backend=test',
-    '--gas=auto',
-    '--gas-adjustment=1.2',
     '--chain-id',
     CHAINID,
     '-bblock',
diff --git a/packages/synthetic-chain/src/lib/core-eval.ts b/packages/synthetic-chain/src/lib/core-eval.ts
index 98a4c2b4..c85087e7 100644
--- a/packages/synthetic-chain/src/lib/core-eval.ts
+++ b/packages/synthetic-chain/src/lib/core-eval.ts
@@ -171,7 +171,7 @@ export const passCoreEvalProposal = async (
 
         const bundleRd = path.join(dir, fileName);
         const result = await agd.tx(
-          ['swingset', 'install-bundle', `@${bundleRd}`, '--gas', 'auto'],
+          ['swingset', 'install-bundle', `@${bundleRd}`],
           { from, chainId, yes: true },
         );
         console.log(txAbbr(result));
@@ -224,7 +224,6 @@ export const passCoreEvalProposal = async (
         'swingset-core-eval',
         ...evalPaths,
         ...flags({ ...info, deposit }),
-        ...flags({ gas: 'auto', 'gas-adjustment': '1.2' }),
       ],
       { from, chainId, yes: true },
     );