diff --git a/tests/e2e/main_test.go b/tests/e2e/main_test.go
index 78d7da1c..5010bdf0 100644
--- a/tests/e2e/main_test.go
+++ b/tests/e2e/main_test.go
@@ -9,6 +9,7 @@ import (
 	"github.com/babylonchain/babylon-sdk/demo/app"
 	appparams "github.com/babylonchain/babylon-sdk/demo/app/params"
 	"github.com/babylonchain/babylon-sdk/tests/e2e/types"
+	bbntypes "github.com/babylonchain/babylon-sdk/x/babylon/types"
 	zctypes "github.com/babylonchain/babylon/x/zoneconcierge/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	ibctesting2 "github.com/cosmos/ibc-go/v8/testing"
@@ -94,13 +95,16 @@ func (s *BabylonSDKTestSuite) Test1ContractDeployment() {
 	s.NoError(err)
 	s.Equal(adminResp["admin"], s.ConsumerCli.GetSender().String())
 
-	// update the contract address in parameters (typically this has to be done via gov props)
-	ctx := s.ConsumerChain.GetContext()
-	params := s.ConsumerApp.BabylonKeeper.GetParams(ctx)
-	params.BabylonContractAddress = s.ConsumerContract.Babylon.String()
-	params.BtcStakingContractAddress = s.ConsumerContract.BTCStaking.String()
-	err = s.ConsumerApp.BabylonKeeper.SetParams(ctx, params)
-	s.NoError(err)
+	// update the contract address in parameters
+	msgUpdateParams := &bbntypes.MsgUpdateParams{
+		Authority: s.ConsumerApp.BabylonKeeper.GetAuthority(),
+		Params: bbntypes.Params{
+			MaxGasBeginBlocker:        500_000,
+			BabylonContractAddress:    s.ConsumerContract.Babylon.String(),
+			BtcStakingContractAddress: s.ConsumerContract.BTCStaking.String(),
+		},
+	}
+	s.ConsumerCli.MustExecGovProposal(msgUpdateParams)
 }
 
 // TestExample is an example test case
diff --git a/tests/e2e/test_client.go b/tests/e2e/test_client.go
index dd2d5677..9ff7180e 100644
--- a/tests/e2e/test_client.go
+++ b/tests/e2e/test_client.go
@@ -7,11 +7,12 @@ import (
 
 	"github.com/CosmWasm/wasmd/x/wasm/ibctesting"
 	wasmtypes "github.com/CosmWasm/wasmd/x/wasm/types"
+	"github.com/babylonchain/babylon-sdk/demo/app"
+	bbntypes "github.com/babylonchain/babylon-sdk/x/babylon/types"
 	abci "github.com/cometbft/cometbft/abci/types"
-
 	sdk "github.com/cosmos/cosmos-sdk/types"
-
-	"github.com/babylonchain/babylon-sdk/demo/app"
+	govv1 "github.com/cosmos/cosmos-sdk/x/gov/types/v1"
+	"github.com/stretchr/testify/require"
 )
 
 // Query is a query type used in tests only
@@ -156,3 +157,52 @@ func (p *TestConsumerClient) Exec(contract sdk.AccAddress, payload []byte, funds
 func (p *TestConsumerClient) Query(contractAddr sdk.AccAddress, query Query) (QueryResponse, error) {
 	return Querier(p.t, p.Chain)(contractAddr.String(), query)
 }
+
+// MustExecGovProposal submit and vote yes on proposal
+func (p *TestConsumerClient) MustExecGovProposal(msg *bbntypes.MsgUpdateParams) {
+	proposalID := submitGovProposal(p.t, p.Chain, msg)
+	voteAndPassGovProposal(p.t, p.Chain, proposalID)
+}
+
+func submitGovProposal(t *testing.T, chain *ibctesting.TestChain, msgs ...sdk.Msg) uint64 {
+	// get gov module parameters
+	chainApp := chain.App.(*app.ConsumerApp)
+	govParams, err := chainApp.GovKeeper.Params.Get(chain.GetContext())
+	require.NoError(t, err)
+
+	// construct proposal
+	govMsg, err := govv1.NewMsgSubmitProposal(msgs, govParams.MinDeposit, chain.SenderAccount.GetAddress().String(), "", "my title", "my summary", false)
+	require.NoError(t, err)
+
+	// submit proposal
+	_, err = chain.SendMsgs(govMsg)
+	require.NoError(t, err)
+
+	// get next proposal ID
+	proposalID, err := chainApp.GovKeeper.ProposalID.Peek(chain.GetContext())
+	require.NoError(t, err)
+
+	return proposalID - 1
+}
+
+func voteAndPassGovProposal(t *testing.T, chain *ibctesting.TestChain, proposalID uint64) {
+	// get gov module parameters
+	chainApp := chain.App.(*app.ConsumerApp)
+	govParams, err := chainApp.GovKeeper.Params.Get(chain.GetContext())
+	require.NoError(t, err)
+
+	// construct and submit vote
+	vote := govv1.NewMsgVote(chain.SenderAccount.GetAddress(), proposalID, govv1.OptionYes, "testing")
+	_, err = chain.SendMsgs(vote)
+	require.NoError(t, err)
+
+	// pass voting period
+	coord := chain.Coordinator
+	coord.IncrementTimeBy(*govParams.VotingPeriod)
+	coord.CommitBlock(chain)
+
+	// ensure proposal is passed
+	proposal, err := chainApp.GovKeeper.Proposals.Get(chain.GetContext(), proposalID)
+	require.NoError(t, err)
+	require.Equal(t, proposal.Status, govv1.ProposalStatus_PROPOSAL_STATUS_PASSED)
+}
diff --git a/x/babylon/messages.md b/x/babylon/messages.md
deleted file mode 100644
index 2075d4f7..00000000
--- a/x/babylon/messages.md
+++ /dev/null
@@ -1,138 +0,0 @@
-# Active to tombstone
-```json
-{
-  "valset_update": {
-    "additions": [],
-    "removals": [
-      "cosmosvaloper1qpr9kv5wyatfuefj3f9xklm87es8yayd2qls7d"
-    ],
-    "updated": [
-      {
-        "address": "cosmosvaloper1qpr9kv5wyatfuefj3f9xklm87es8yayd2qls7d",
-        "commission": "1.000000000000000000",
-        "max_commission": "1.000000000000000000",
-        "max_change_rate": "1.000000000000000000"
-      }
-    ],
-    "jailed": [
-      "cosmosvaloper1qpr9kv5wyatfuefj3f9xklm87es8yayd2qls7d"
-    ],
-    "unjailed": [],
-    "tombstoned": [
-      "cosmosvaloper1qpr9kv5wyatfuefj3f9xklm87es8yayd2qls7d"
-    ]
-  }
-}
-```
-
-# Active to jailed
-```json
-{
-  "valset_update": {
-    "additions": [],
-    "removals": [
-      "cosmosvaloper1cdwwskxm5qjsgetkxlv95p5jshz05gn320z30t"
-    ],
-    "updated": [
-      {
-        "address": "cosmosvaloper1cdwwskxm5qjsgetkxlv95p5jshz05gn320z30t",
-        "commission": "0.000000000000000000",
-        "max_commission": "1.000000000000000000",
-        "max_change_rate": "1.000000000000000000"
-      }
-    ],
-    "jailed": [
-      "cosmosvaloper1cdwwskxm5qjsgetkxlv95p5jshz05gn320z30t"
-    ],
-    "unjailed": [],
-    "tombstoned": []
-  }
-}
-
-```
-# Jailed to active
-```json
-{
-  "valset_update": {
-    "additions": [
-      {
-        "address": "cosmosvaloper13kdr4felug9grnswvlrtegxrlvh8ks724sfugn",
-        "commission": "0.000000000000000000",
-        "max_commission": "1.000000000000000000",
-        "max_change_rate": "1.000000000000000000"
-      }
-    ],
-    "removals": [],
-    "updated": [],
-    "jailed": [],
-    "unjailed": [
-      "cosmosvaloper13kdr4felug9grnswvlrtegxrlvh8ks724sfugn"
-    ],
-    "tombstoned": []
-  }
-}
-```
-
-## Jailed to removed
-3 differet events, unlikely at the same height
-* jailed:
-```json
-{
-  "valset_update": {
-    "additions": [],
-    "removals": [
-      "cosmosvaloper18l39958dn3ntwdyz87ex3xa5l3mp02ym5r03xe"
-    ],
-    "updated": [
-      {
-        "address": "cosmosvaloper18l39958dn3ntwdyz87ex3xa5l3mp02ym5r03xe",
-        "commission": "0.000000000000000000",
-        "max_commission": "1.000000000000000000",
-        "max_change_rate": "1.000000000000000000"
-      }
-    ],
-    "jailed": [
-      "cosmosvaloper18l39958dn3ntwdyz87ex3xa5l3mp02ym5r03xe"
-    ],
-    "unjailed": [],
-    "tombstoned": []
-  }
-}
-```
-* new validator gets slot
-```json
-{
-  "valset_update": {
-    "additions": [
-      {
-        "address": "cosmosvaloper17w36un4m6s848secp045zlwztreeh40z0s6ffu",
-        "commission": "0.000000000000000000",
-        "max_commission": "1.000000000000000000",
-        "max_change_rate": "1.000000000000000000"
-      }
-    ],
-    "removals": [],
-    "updated": [],
-    "jailed": [],
-    "unjailed": [],
-    "tombstoned": []
-  }
-}
-
-```
-* unjailed but not back in active set
-```json
-{
-  "valset_update": {
-    "additions": [],
-    "removals": [],
-    "updated": [],
-    "jailed": [],
-    "unjailed": [
-      "cosmosvaloper18l39958dn3ntwdyz87ex3xa5l3mp02ym5r03xe"
-    ],
-    "tombstoned": []
-  }
-}
-```
-