diff --git a/packages/bruno-cli/src/runner/run-single-request.js b/packages/bruno-cli/src/runner/run-single-request.js
index 2d5c5fdea..c660367e8 100644
--- a/packages/bruno-cli/src/runner/run-single-request.js
+++ b/packages/bruno-cli/src/runner/run-single-request.js
@@ -211,8 +211,8 @@ const runSingleRequest = async function (
         let uriPort = isUndefined(proxyPort) || isNull(proxyPort) ? '' : `:${proxyPort}`;
         let proxyUri;
         if (proxyAuthEnabled) {
-          const proxyAuthUsername = interpolateString(get(proxyConfig, 'auth.username'), interpolationOptions);
-          const proxyAuthPassword = interpolateString(get(proxyConfig, 'auth.password'), interpolationOptions);
+          const proxyAuthUsername = encodeURIComponent(interpolateString(get(proxyConfig, 'auth.username'), interpolationOptions));
+          const proxyAuthPassword = encodeURIComponent(interpolateString(get(proxyConfig, 'auth.password'), interpolationOptions));
 
           proxyUri = `${proxyProtocol}://${proxyAuthUsername}:${proxyAuthPassword}@${proxyHostname}${uriPort}`;
         } else {
diff --git a/packages/bruno-electron/src/utils/proxy-util.js b/packages/bruno-electron/src/utils/proxy-util.js
index b44c702db..2a9ef26cb 100644
--- a/packages/bruno-electron/src/utils/proxy-util.js
+++ b/packages/bruno-electron/src/utils/proxy-util.js
@@ -324,8 +324,8 @@ function setupProxyAgents({
       let uriPort = isUndefined(proxyPort) || isNull(proxyPort) ? '' : `:${proxyPort}`;
       let proxyUri;
       if (proxyAuthEnabled) {
-        const proxyAuthUsername = interpolateString(get(proxyConfig, 'auth.username'), interpolationOptions);
-        const proxyAuthPassword = interpolateString(get(proxyConfig, 'auth.password'), interpolationOptions);
+        const proxyAuthUsername = encodeURIComponent(interpolateString(get(proxyConfig, 'auth.username'), interpolationOptions));
+        const proxyAuthPassword = encodeURIComponent(interpolateString(get(proxyConfig, 'auth.password'), interpolationOptions));
         proxyUri = `${proxyProtocol}://${proxyAuthUsername}:${proxyAuthPassword}@${proxyHostname}${uriPort}`;
       } else {
         proxyUri = `${proxyProtocol}://${proxyHostname}${uriPort}`;