diff --git a/apps/chrome-extension/src/components/WalletTab.tsx b/apps/chrome-extension/src/components/WalletTab.tsx
index 36f66736..c1b882ad 100644
--- a/apps/chrome-extension/src/components/WalletTab.tsx
+++ b/apps/chrome-extension/src/components/WalletTab.tsx
@@ -7,6 +7,7 @@ import { useWalletContext } from "../contexts/WalletProvider";
 import { useSnackbar } from "../contexts/SnackbarProvider";
 import WarningModal from "../modals/WarningModal";
 import MnemonicModal from "../modals/MnemonicModal";
+import PassphraseModal from "../modals/PassphraseModal";
 import WalletChrome from "@didcid/keymaster/wallet/chrome";
 
 const WalletTab = () => {
@@ -17,6 +18,8 @@ const WalletTab = () => {
     const [checkingWallet, setCheckingWallet] = useState<boolean>(false);
     const [showFixModal, setShowFixModal] = useState<boolean>(false);
     const [checkResultMessage, setCheckResultMessage] = useState<string>("");
+    const [showChangePassphrase, setShowChangePassphrase] = useState<boolean>(false);
+    const [changePassError, setChangePassError] = useState<string>("");
     const {
         keymaster,
         initialiseWallet,
@@ -215,6 +218,21 @@ const WalletTab = () => {
         }
     }
 
+    async function handleChangePassphrase(newPassphrase: string) {
+        if (!keymaster) {
+            return;
+        }
+        try {
+            await keymaster.changePassphrase(newPassphrase);
+            await chrome.runtime.sendMessage({ action: "STORE_PASSPHRASE", passphrase: newPassphrase });
+            setShowChangePassphrase(false);
+            setChangePassError("");
+            setSuccess("Passphrase changed");
+        } catch (error: any) {
+            setChangePassError(error?.message || "Failed to change passphrase");
+        }
+    }
+
     return (
         <Box>
             <WarningModal
@@ -239,6 +257,15 @@ const WalletTab = () => {
                 onClose={handleMnemonicModalClose}
             />
 
+            <PassphraseModal
+                isOpen={showChangePassphrase}
+                title="Change Passphrase"
+                errorText={changePassError}
+                onSubmit={handleChangePassphrase}
+                onClose={() => { setShowChangePassphrase(false); setChangePassError(""); }}
+                encrypt={true}
+                showCancel={true}
+            />
 
             <Box className="flex-box" sx={{ gap: 2 }}>
                 <Button
@@ -308,6 +335,15 @@ const WalletTab = () => {
                     </Button>
                 )}
 
+                <Button
+                    className="mini-margin"
+                    variant="contained"
+                    color="primary"
+                    onClick={() => setShowChangePassphrase(true)}
+                >
+                    Change Passphrase
+                </Button>
+
                 <Button
                     className="mini-margin"
                     variant="contained"
diff --git a/apps/react-wallet/src/components/WalletTab.tsx b/apps/react-wallet/src/components/WalletTab.tsx
index 9c04c2a3..26f3171b 100644
--- a/apps/react-wallet/src/components/WalletTab.tsx
+++ b/apps/react-wallet/src/components/WalletTab.tsx
@@ -7,8 +7,9 @@ import { useWalletContext } from "../contexts/WalletProvider";
 import { useSnackbar } from "../contexts/SnackbarProvider";
 import WarningModal from "../modals/WarningModal";
 import MnemonicModal from "../modals/MnemonicModal";
+import PassphraseModal from "../modals/PassphraseModal";
 import WalletWeb from "@didcid/keymaster/wallet/web";
-import {clearSessionPassphrase} from "../utils/sessionPassphrase";
+import { clearSessionPassphrase, setSessionPassphrase } from "../utils/sessionPassphrase";
 
 const WalletTab = () => {
     const [open, setOpen] = useState<boolean>(false);
@@ -18,6 +19,8 @@ const WalletTab = () => {
     const [checkingWallet, setCheckingWallet] = useState<boolean>(false);
     const [showFixModal, setShowFixModal] = useState<boolean>(false);
     const [checkResultMessage, setCheckResultMessage] = useState<string>("");
+    const [showChangePassphrase, setShowChangePassphrase] = useState<boolean>(false);
+    const [changePassError, setChangePassError] = useState<string>("");
     const {
         keymaster,
         initialiseWallet,
@@ -215,6 +218,21 @@ const WalletTab = () => {
         }
     }
 
+    async function handleChangePassphrase(newPassphrase: string) {
+        if (!keymaster) {
+            return;
+        }
+        try {
+            await keymaster.changePassphrase(newPassphrase);
+            setSessionPassphrase(newPassphrase);
+            setShowChangePassphrase(false);
+            setChangePassError("");
+            setSuccess("Passphrase changed");
+        } catch (error: any) {
+            setChangePassError(error?.message || "Failed to change passphrase");
+        }
+    }
+
     return (
         <Box sx={{ overflowX: "hidden" }}>
             <WarningModal
@@ -239,6 +257,16 @@ const WalletTab = () => {
                 onClose={handleMnemonicModalClose}
             />
 
+            <PassphraseModal
+                isOpen={showChangePassphrase}
+                title="Change Passphrase"
+                errorText={changePassError}
+                onSubmit={handleChangePassphrase}
+                onClose={() => { setShowChangePassphrase(false); setChangePassError(""); }}
+                encrypt={true}
+                showCancel={true}
+            />
+
             <Box
                 sx={{
                     position: "sticky",
@@ -326,6 +354,16 @@ const WalletTab = () => {
                             </Button>
                         )}
 
+                        <Button
+                            className="mini-margin"
+                            variant="contained"
+                            color="primary"
+                            onClick={() => setShowChangePassphrase(true)}
+                            sx={{ width: '100%', mb: 1 }}
+                        >
+                            Change Passphrase
+                        </Button>
+
                         <Button
                             className="mini-margin"
                             variant="contained"
diff --git a/services/gatekeeper/client/src/KeymasterUI.js b/services/gatekeeper/client/src/KeymasterUI.js
index 497ea2fc..3f2c336a 100644
--- a/services/gatekeeper/client/src/KeymasterUI.js
+++ b/services/gatekeeper/client/src/KeymasterUI.js
@@ -1885,6 +1885,24 @@ function KeymasterUI({ keymaster, title, challengeDID, onWalletUpload }) {
         }
     }
 
+    async function changePassphrase() {
+        try {
+            const newPass = window.prompt("Enter new passphrase:");
+            if (!newPass) {
+                return;
+            }
+            const confirmPassphrase = window.prompt("Confirm new passphrase:");
+            if (newPass !== confirmPassphrase) {
+                showError("Passphrases do not match");
+                return;
+            }
+            await keymaster.changePassphrase(newPass);
+            showSuccess('Passphrase changed');
+        } catch (error) {
+            showError(error);
+        }
+    }
+
     async function uploadImage(event) {
         try {
             const fileInput = event.target; // Reference to the input element
@@ -5361,6 +5379,11 @@ function KeymasterUI({ keymaster, title, challengeDID, onWalletUpload }) {
                                         Upload...
                                     </Button>
                                 </Grid>
+                                <Grid item>
+                                    <Button variant="contained" color="primary" onClick={changePassphrase}>
+                                        Change Passphrase...
+                                    </Button>
+                                </Grid>
                             </Grid>
                             <p />
                             <Box>
diff --git a/services/keymaster/client/src/KeymasterUI.js b/services/keymaster/client/src/KeymasterUI.js
index 497ea2fc..3f2c336a 100644
--- a/services/keymaster/client/src/KeymasterUI.js
+++ b/services/keymaster/client/src/KeymasterUI.js
@@ -1885,6 +1885,24 @@ function KeymasterUI({ keymaster, title, challengeDID, onWalletUpload }) {
         }
     }
 
+    async function changePassphrase() {
+        try {
+            const newPass = window.prompt("Enter new passphrase:");
+            if (!newPass) {
+                return;
+            }
+            const confirmPassphrase = window.prompt("Confirm new passphrase:");
+            if (newPass !== confirmPassphrase) {
+                showError("Passphrases do not match");
+                return;
+            }
+            await keymaster.changePassphrase(newPass);
+            showSuccess('Passphrase changed');
+        } catch (error) {
+            showError(error);
+        }
+    }
+
     async function uploadImage(event) {
         try {
             const fileInput = event.target; // Reference to the input element
@@ -5361,6 +5379,11 @@ function KeymasterUI({ keymaster, title, challengeDID, onWalletUpload }) {
                                         Upload...
                                     </Button>
                                 </Grid>
+                                <Grid item>
+                                    <Button variant="contained" color="primary" onClick={changePassphrase}>
+                                        Change Passphrase...
+                                    </Button>
+                                </Grid>
                             </Grid>
                             <p />
                             <Box>