diff --git a/zetaclient/core_context/zeta_core_context_test.go b/zetaclient/core_context/zeta_core_context_test.go
index fdf57ce881..2620ac5445 100644
--- a/zetaclient/core_context/zeta_core_context_test.go
+++ b/zetaclient/core_context/zeta_core_context_test.go
@@ -6,6 +6,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"github.com/zeta-chain/zetacore/common"
 	observertypes "github.com/zeta-chain/zetacore/x/observer/types"
+	clientcommon "github.com/zeta-chain/zetacore/zetaclient/common"
 	"github.com/zeta-chain/zetacore/zetaclient/config"
 )
 
@@ -90,6 +91,168 @@ func TestNewZetaCoreContext(t *testing.T) {
 	})
 }
 
+func TestUpdateZetaCoreContext(t *testing.T) {
+	t.Run("should update core context after being created from empty config", func(t *testing.T) {
+		testCfg := config.NewConfig()
+
+		zetaContext := NewZetaCoreContext(testCfg)
+		require.NotNil(t, zetaContext)
+
+		keyGenToUpdate := observertypes.Keygen{
+			Status:         observertypes.KeygenStatus_KeyGenSuccess,
+			GranteePubkeys: []string{"testpubkey1"},
+		}
+		enabledChainsToUpdate := []common.Chain{
+			{
+				ChainName: 1,
+				ChainId:   1,
+			},
+			{
+				ChainName: 2,
+				ChainId:   2,
+			},
+		}
+		evmChainParamsToUpdate := map[int64]*observertypes.ChainParams{
+			1: {
+				ChainId: 1,
+			},
+			2: {
+				ChainId: 2,
+			},
+		}
+		btcChainParamsToUpdate := &observertypes.ChainParams{
+			ChainId: 3,
+		}
+		tssPubKeyToUpdate := "tsspubkeytest"
+		loggers := clientcommon.DefaultLoggers()
+		zetaContext.Update(
+			&keyGenToUpdate,
+			enabledChainsToUpdate,
+			evmChainParamsToUpdate,
+			btcChainParamsToUpdate,
+			tssPubKeyToUpdate,
+			false,
+			loggers.Std,
+		)
+
+		// assert keygen updated
+		keyGen, keyGenFound := zetaContext.GetKeygen()
+		require.True(t, keyGenFound)
+		require.Equal(t, keyGenToUpdate, keyGen)
+
+		// assert enabled chains updated
+		require.Equal(t, enabledChainsToUpdate, zetaContext.GetEnabledChains())
+
+		// assert current tss pubkey updated
+		require.Equal(t, tssPubKeyToUpdate, zetaContext.GetCurrentTssPubkey())
+
+		// assert btc chain params still empty because they were not specified in config
+		chain, btcChainParams, btcChainParamsFound := zetaContext.GetBTCChainParams()
+		require.Equal(t, common.Chain{}, chain)
+		require.False(t, btcChainParamsFound)
+		require.Equal(t, &observertypes.ChainParams{}, btcChainParams)
+
+		// assert evm chain params still empty because they were not specified in config
+		allEVMChainParams := zetaContext.GetAllEVMChainParams()
+		require.Empty(t, allEVMChainParams)
+	})
+
+	t.Run("should update core context after being created from config with evm and btc chain params", func(t *testing.T) {
+		testCfg := config.NewConfig()
+		testCfg.EVMChainConfigs = map[int64]*config.EVMConfig{
+			1: {
+				Chain: common.Chain{
+					ChainName: 1,
+					ChainId:   1,
+				},
+			},
+			2: {
+				Chain: common.Chain{
+					ChainName: 2,
+					ChainId:   2,
+				},
+			},
+		}
+		testCfg.BitcoinConfig = &config.BTCConfig{
+			RPCUsername: "test username",
+			RPCPassword: "test password",
+			RPCHost:     "test host",
+			RPCParams:   "test params",
+		}
+
+		zetaContext := NewZetaCoreContext(testCfg)
+		require.NotNil(t, zetaContext)
+
+		keyGenToUpdate := observertypes.Keygen{
+			Status:         observertypes.KeygenStatus_KeyGenSuccess,
+			GranteePubkeys: []string{"testpubkey1"},
+		}
+		enabledChainsToUpdate := []common.Chain{
+			{
+				ChainName: 1,
+				ChainId:   1,
+			},
+			{
+				ChainName: 2,
+				ChainId:   2,
+			},
+		}
+		evmChainParamsToUpdate := map[int64]*observertypes.ChainParams{
+			1: {
+				ChainId: 1,
+			},
+			2: {
+				ChainId: 2,
+			},
+		}
+
+		testBtcChain := common.BtcTestNetChain()
+		btcChainParamsToUpdate := &observertypes.ChainParams{
+			ChainId: testBtcChain.ChainId,
+		}
+		tssPubKeyToUpdate := "tsspubkeytest"
+		loggers := clientcommon.DefaultLoggers()
+		zetaContext.Update(
+			&keyGenToUpdate,
+			enabledChainsToUpdate,
+			evmChainParamsToUpdate,
+			btcChainParamsToUpdate,
+			tssPubKeyToUpdate,
+			false,
+			loggers.Std,
+		)
+
+		// assert keygen updated
+		keyGen, keyGenFound := zetaContext.GetKeygen()
+		require.True(t, keyGenFound)
+		require.Equal(t, keyGenToUpdate, keyGen)
+
+		// assert enabled chains updated
+		require.Equal(t, enabledChainsToUpdate, zetaContext.GetEnabledChains())
+
+		// assert current tss pubkey updated
+		require.Equal(t, tssPubKeyToUpdate, zetaContext.GetCurrentTssPubkey())
+
+		// assert btc chain params
+		chain, btcChainParams, btcChainParamsFound := zetaContext.GetBTCChainParams()
+		require.Equal(t, testBtcChain, chain)
+		require.True(t, btcChainParamsFound)
+		require.Equal(t, btcChainParamsToUpdate, btcChainParams)
+
+		// assert evm chain params
+		allEVMChainParams := zetaContext.GetAllEVMChainParams()
+		require.Equal(t, evmChainParamsToUpdate, allEVMChainParams)
+
+		evmChainParams1, found := zetaContext.GetEVMChainParams(1)
+		require.True(t, found)
+		require.Equal(t, evmChainParamsToUpdate[1], evmChainParams1)
+
+		evmChainParams2, found := zetaContext.GetEVMChainParams(2)
+		require.True(t, found)
+		require.Equal(t, evmChainParamsToUpdate[2], evmChainParams2)
+	})
+}
+
 func assertPanic(t *testing.T, f func(), errorLog string) {
 	defer func() {
 		r := recover()