diff --git a/jenkins/jenkins_home/config.xml b/jenkins/jenkins_home/config.xml
index f1bfd28..e4def5c 100644
--- a/jenkins/jenkins_home/config.xml
+++ b/jenkins/jenkins_home/config.xml
@@ -1,7 +1,7 @@
 <?xml version='1.1' encoding='UTF-8'?>
 <hudson>
   <disabledAdministrativeMonitors/>
-  <version>2.387.3</version>
+  <version>2.426.3</version>
   <numExecutors>2</numExecutors>
   <mode>NORMAL</mode>
   <useSecurity>true</useSecurity>
diff --git a/node-scripts/spec/pipeline3/scripts.spec.js b/node-scripts/spec/pipeline3/scripts.spec.js
index 3ec4263..3098492 100644
--- a/node-scripts/spec/pipeline3/scripts.spec.js
+++ b/node-scripts/spec/pipeline3/scripts.spec.js
@@ -419,7 +419,7 @@ describe("Scripts", function() {
     var filename = ".env";
 
     expect(scripts.writeProperty(envVar, value, filename)).toEqual(
-      'if ! grep -R "^[#]*s*KEY.*" .env > /dev/null; then\n' +
+      'if ! grep -w "KEY" .env > /dev/null; then\n' +
         "\techo \"'KEY' is not found in file '.env'. Appending...\"\n" +
         '\techo "KEY=a/path/on/the/disk" >> .env\n' +
         "else\n" +
diff --git a/node-scripts/src/pipeline3/scripts.js b/node-scripts/src/pipeline3/scripts.js
index 8a7063e..0003cf4 100644
--- a/node-scripts/src/pipeline3/scripts.js
+++ b/node-scripts/src/pipeline3/scripts.js
@@ -697,7 +697,7 @@ module.exports = {
   writeProperty(propertyName, value, filename) {
     var script = "";
 
-    script += `if ! grep -R "^[#]*\s*${propertyName}.*" ${filename} > /dev/null; then\n`;
+    script += `if ! grep -w "${propertyName}" ${filename} > /dev/null; then\n`;
     script += `\techo "'${propertyName}' is not found in file '${filename}'. Appending..."\n`;
     script += `\techo "${propertyName}=${value}" >> ${filename}\n`;
     script += "else\n";