diff --git a/packages/stargate/src/queries/gov.spec.ts b/packages/stargate/src/queries/gov.spec.ts
index e69de29b..b699d2a6 100644
--- a/packages/stargate/src/queries/gov.spec.ts
+++ b/packages/stargate/src/queries/gov.spec.ts
@@ -0,0 +1,291 @@
+import { coins } from "@cosmjs/amino";
+import { toAscii } from "@cosmjs/encoding";
+import { DirectSecp256k1HdWallet } from "@cosmjs/proto-signing";
+import { Tendermint34Client } from "@cosmjs/tendermint-rpc";
+import { assert, sleep } from "@cosmjs/utils";
+import { ProposalStatus, TextProposal, VoteOption } from "cosmjs-types/cosmos/gov/v1beta1/gov";
+import { Any } from "cosmjs-types/google/protobuf/any";
+import Long from "long";
+
+import { MsgSubmitProposalEncodeObject, MsgVoteEncodeObject } from "../encodeobjects";
+import { SigningStargateClient } from "../signingstargateclient";
+import { assertIsBroadcastTxSuccess } from "../stargateclient";
+import {
+  defaultSigningClientOptions,
+  faucet,
+  nonNegativeIntegerMatcher,
+  pendingWithoutSimapp,
+  simapp,
+  simappEnabled,
+} from "../testutils.spec";
+import { GovExtension, setupGovExtension } from "./gov";
+import { QueryClient } from "./queryclient";
+import { longify } from "./utils";
+
+async function makeClientWithGov(rpcUrl: string): Promise<[QueryClient & GovExtension, Tendermint34Client]> {
+  const tmClient = await Tendermint34Client.connect(rpcUrl);
+  return [QueryClient.withExtensions(tmClient, setupGovExtension), tmClient];
+}
+
+describe("GovExtension", () => {
+  const defaultFee = {
+    amount: coins(25000, "ucosm"),
+    gas: "1500000", // 1.5 million
+  };
+  const textProposal = TextProposal.fromPartial({
+    title: "Test Proposal",
+    description: "This proposal proposes to test whether this proposal passes",
+  });
+  const minDeposit = coins(10000000, "ustake");
+  const initialDeposit = coins(12300000, "ustake");
+  let proposalId: string;
+
+  beforeAll(async () => {
+    if (simappEnabled()) {
+      const wallet = await DirectSecp256k1HdWallet.fromMnemonic(faucet.mnemonic);
+      const [firstAccount] = await wallet.getAccounts();
+      const client = await SigningStargateClient.connectWithSigner(
+        simapp.tendermintUrl,
+        wallet,
+        defaultSigningClientOptions,
+      );
+
+      const proposalMsg: MsgSubmitProposalEncodeObject = {
+        typeUrl: "/cosmos.gov.v1beta1.MsgSubmitProposal",
+        value: {
+          content: Any.fromPartial({
+            typeUrl: "/cosmos.gov.v1beta1.TextProposal",
+            value: Uint8Array.from(TextProposal.encode(textProposal).finish()),
+          }),
+          proposer: faucet.address0,
+          initialDeposit: initialDeposit,
+        },
+      };
+      const proposalResult = await client.signAndBroadcast(
+        firstAccount.address,
+        [proposalMsg],
+        defaultFee,
+        "Test proposal for simd",
+      );
+      assertIsBroadcastTxSuccess(proposalResult);
+      const logs = JSON.parse(proposalResult.rawLog || "");
+      proposalId = logs[0].events
+        .find(({ type }: any) => type === "submit_proposal")
+        .attributes.find(({ key }: any) => key === "proposal_id").value;
+      assert(proposalId.match(nonNegativeIntegerMatcher));
+
+      const voteMsg: MsgVoteEncodeObject = {
+        typeUrl: "/cosmos.gov.v1beta1.MsgVote",
+        value: {
+          proposalId: longify(proposalId),
+          voter: faucet.address0,
+          option: VoteOption.VOTE_OPTION_YES,
+        },
+      };
+      const voteMemo = "Test vote for simd";
+      await client.signAndBroadcast(firstAccount.address, [voteMsg], defaultFee, voteMemo);
+
+      await sleep(75); // wait until transactions are indexed
+    }
+  });
+
+  describe("params", () => {
+    it("works for deposit", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.params("deposit");
+      expect(response).toEqual(
+        jasmine.objectContaining({
+          depositParams: {
+            minDeposit: minDeposit,
+            maxDepositPeriod: {
+              seconds: Long.fromNumber(172800, false),
+              nanos: 0,
+            },
+          },
+        }),
+      );
+
+      tmClient.disconnect();
+    });
+
+    it("works for tallying", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.params("tallying");
+      expect(response).toEqual(
+        jasmine.objectContaining({
+          tallyParams: {
+            // Why the f*** are we getting binary values here?
+            quorum: toAscii("334000000000000000"), // 0.334
+            threshold: toAscii("500000000000000000"), // 0.5
+            vetoThreshold: toAscii("334000000000000000"), // 0.334
+          },
+        }),
+      );
+
+      tmClient.disconnect();
+    });
+
+    it("works for voting", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.params("voting");
+      expect(response).toEqual(
+        jasmine.objectContaining({
+          votingParams: {
+            votingPeriod: {
+              seconds: Long.fromNumber(172800, false),
+              nanos: 0,
+            },
+          },
+        }),
+      );
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("proposals", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.proposals(
+        ProposalStatus.PROPOSAL_STATUS_VOTING_PERIOD,
+        faucet.address0,
+        faucet.address0,
+      );
+      expect(response.proposals.length).toBeGreaterThanOrEqual(1);
+      expect(response.proposals[response.proposals.length - 1]).toEqual({
+        content: Any.fromPartial({
+          typeUrl: "/cosmos.gov.v1beta1.TextProposal",
+          value: Uint8Array.from(TextProposal.encode(textProposal).finish()),
+        }),
+        proposalId: longify(proposalId),
+        status: ProposalStatus.PROPOSAL_STATUS_VOTING_PERIOD,
+        finalTallyResult: { yes: "0", abstain: "0", no: "0", noWithVeto: "0" },
+        submitTime: jasmine.any(Date),
+        depositEndTime: jasmine.any(Date),
+        totalDeposit: initialDeposit,
+        votingStartTime: jasmine.any(Date),
+        votingEndTime: jasmine.any(Date),
+      });
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("proposal", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.proposal(proposalId);
+      expect(response.proposal).toEqual({
+        content: Any.fromPartial({
+          typeUrl: "/cosmos.gov.v1beta1.TextProposal",
+          value: Uint8Array.from(TextProposal.encode(textProposal).finish()),
+        }),
+        proposalId: longify(proposalId),
+        status: ProposalStatus.PROPOSAL_STATUS_VOTING_PERIOD,
+        finalTallyResult: { yes: "0", abstain: "0", no: "0", noWithVeto: "0" },
+        submitTime: jasmine.any(Date),
+        depositEndTime: jasmine.any(Date),
+        totalDeposit: initialDeposit,
+        votingStartTime: jasmine.any(Date),
+        votingEndTime: jasmine.any(Date),
+      });
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("deposits", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.deposits(proposalId);
+      expect(response.deposits).toEqual([
+        {
+          proposalId: longify(proposalId),
+          depositor: faucet.address0,
+          amount: initialDeposit,
+        },
+      ]);
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("deposit", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.deposit(proposalId, faucet.address0);
+      expect(response.deposit).toEqual({
+        proposalId: longify(proposalId),
+        depositor: faucet.address0,
+        amount: initialDeposit,
+      });
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("tally", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.tally(proposalId);
+      expect(response.tally).toEqual({
+        yes: "0",
+        abstain: "0",
+        no: "0",
+        noWithVeto: "0",
+      });
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("votes", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.votes(proposalId);
+      expect(response.votes).toEqual([
+        {
+          proposalId: longify(proposalId),
+          voter: faucet.address0,
+          option: VoteOption.VOTE_OPTION_YES,
+        },
+      ]);
+
+      tmClient.disconnect();
+    });
+  });
+
+  describe("vote", () => {
+    it("works", async () => {
+      pendingWithoutSimapp();
+      const [client, tmClient] = await makeClientWithGov(simapp.tendermintUrl);
+
+      const response = await client.gov.vote(proposalId, faucet.address0);
+      expect(response.vote).toEqual({
+        voter: faucet.address0,
+        proposalId: longify(proposalId),
+        option: VoteOption.VOTE_OPTION_YES,
+      });
+
+      tmClient.disconnect();
+    });
+  });
+});