diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8350a6fb8ad4..50af835d31d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -74,6 +74,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### Improvements
 
 * (cli) [\#9593](https://github.com/cosmos/cosmos-sdk/pull/9593) Check if chain-id is blank before verifying signatures in multisign and error.
+* (cli) [\#9717](https://github.com/cosmos/cosmos-sdk/pull/9717) Added CLI flag `--output json/text` to `tx` cli commands.
 
 ### Bug Fixes
 
diff --git a/client/flags/flags.go b/client/flags/flags.go
index 80c3e792256a..c4faad1b035a 100644
--- a/client/flags/flags.go
+++ b/client/flags/flags.go
@@ -93,6 +93,7 @@ func AddQueryFlagsToCmd(cmd *cobra.Command) {
 
 // AddTxFlagsToCmd adds common flags to a module tx command.
 func AddTxFlagsToCmd(cmd *cobra.Command) {
+	cmd.Flags().StringP(tmcli.OutputFlag, "o", "json", "Output format (text|json)")
 	cmd.Flags().String(FlagKeyringDir, "", "The client Keyring directory; if omitted, the default 'home' directory will be used")
 	cmd.Flags().String(FlagFrom, "", "Name or address of private key with which to sign")
 	cmd.Flags().Uint64P(FlagAccountNumber, "a", 0, "The account number of the signing account (offline mode only)")