diff --git a/cmd/tendermint/main.go b/cmd/tendermint/main.go
index 04665a88f96..51bbb7a400a 100644
--- a/cmd/tendermint/main.go
+++ b/cmd/tendermint/main.go
@@ -9,10 +9,12 @@ import (
 	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/cli"
 	nm "github.com/tendermint/tendermint/node"
+	"github.com/tendermint/tendermint/types"
 )
 
 func main() {
 	rootCmd := cmd.RootCmd
+	rootCmd.PersistentFlags().Int64Var(&types.PriorityResetHeight, "reset-priority-height", 100, "reset priority height")
 	rootCmd.AddCommand(
 		cmd.GenValidatorCmd,
 		cmd.InitFilesCmd,
diff --git a/node/node.go b/node/node.go
index 58d8daeb6ac..e608bdb588e 100644
--- a/node/node.go
+++ b/node/node.go
@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"net"
 	"net/http"
+	_ "net/http/pprof" //nolint: gosec // securely exposed on separate, optional port
 	"strings"
 	"time"
 
@@ -53,8 +54,6 @@ import (
 	tmtime "github.com/tendermint/tendermint/types/time"
 	"github.com/tendermint/tendermint/version"
 
-	_ "net/http/pprof" //nolint: gosec // securely exposed on separate, optional port
-
 	_ "github.com/lib/pq" // provide the psql db driver
 )
 
@@ -727,6 +726,11 @@ func NewNode(config *cfg.Config,
 		return nil, err
 	}
 
+	if state.LastBlockHeight == types.PriorityResetHeight {
+		state.Validators.ResetPriorities()
+		state.NextValidators.ResetPriorities()
+	}
+
 	// Create the proxyApp and establish connections to the ABCI app (consensus, mempool, query).
 	proxyApp, err := createAndStartProxyAppConns(clientCreator, logger)
 	if err != nil {
diff --git a/state/execution.go b/state/execution.go
index 2cc3db6e799..8da0ce4affb 100644
--- a/state/execution.go
+++ b/state/execution.go
@@ -170,6 +170,10 @@ func (blockExec *BlockExecutor) ApplyBlock(
 		blockExec.logger.Debug("updates to validators", "updates", types.ValidatorListString(validatorUpdates))
 	}
 
+	if block.Height == types.PriorityResetHeight+1 {
+		state.NextValidators.ResetPriorities()
+	}
+
 	// Update the state with the block and responses.
 	state, err = updateState(state, blockID, &block.Header, abciResponses, validatorUpdates)
 	if err != nil {
diff --git a/types/priority_reset.go b/types/priority_reset.go
new file mode 100644
index 00000000000..53cc1da5f2a
--- /dev/null
+++ b/types/priority_reset.go
@@ -0,0 +1,7 @@
+package types
+
+import "math"
+
+var (
+	PriorityResetHeight int64 = math.MaxInt64
+)
diff --git a/types/validator_set.go b/types/validator_set.go
index 39a004b0b6e..b5040b05874 100644
--- a/types/validator_set.go
+++ b/types/validator_set.go
@@ -895,6 +895,13 @@ func (vals *ValidatorSet) StringIndented(indent string) string {
 
 }
 
+// ResetPriorities resets the ProposerPriority of all validators to 0.
+func (vals *ValidatorSet) ResetPriorities() {
+	for _, val := range vals.Validators {
+		val.ProposerPriority = 0
+	}
+}
+
 //-------------------------------------
 
 // ValidatorsByVotingPower implements sort.Interface for []*Validator based on