diff --git a/src/resumes/left-right.vue b/src/resumes/left-right.vue
index 9d9b694..f073ba5 100755
--- a/src/resumes/left-right.vue
+++ b/src/resumes/left-right.vue
@@ -14,7 +14,7 @@
   <div class="left half">
     <div class="experience">
       <h3>{{ lang.headings.experience }}</h3>
-      <div class="experience-block" v-for="experience in person.experience">
+      <div class="experience-block" v-for="experience in person.experience" :key="experience.company">
         <span class="company"> {{experience.company}} </span>
         <span class="job-title"> {{experience.position}} </span>
         <span class="time-period"> {{experience.timeperiod}}</span>
@@ -50,14 +50,14 @@
   <div class="right half">
     <div class="education">
       <h3>{{ lang.headings.education }}</h3>
-      <div class="education-block" v-for="education in person.education">
+      <div class="education-block" v-for="education in person.education" :key="education.degree">
         <span class="degree">{{education.degree}}</span>
         <span class="degree-description">{{education.description}}</span>
       </div>
     </div>
     <h3>{{ lang.headings.skills }}</h3>
     <div class="skills">
-      <div class="skill-block" v-for="skill in person.skills">
+      <div class="skill-block" v-for="skill in person.skills" :key="skill.name">
         <span class="skill">{{skill.name}}</span>
         <div class="skill-bar">
           <div :style="'width: '+skill.level+'%'" class="level"> </div>
diff --git a/src/resumes/material-dark.vue b/src/resumes/material-dark.vue
index de503d8..8a40d43 100755
--- a/src/resumes/material-dark.vue
+++ b/src/resumes/material-dark.vue
@@ -79,7 +79,7 @@
       <div class="section-headline">
         {{ lang.headings.skills }}
       </div>
-      <div class="skill" v-for="skill in person.skills">
+      <div class="skill" v-for="skill in person.skills" :key="skill.name">
         <div class="right">
           <span>{{skill.name}}&nbsp;</span>
           <div class="progress">
@@ -99,7 +99,7 @@
     </div>
 
     <div class="section-headline">{{ lang.headings.experience }}</div>
-    <div class="block" v-for="experience in person.experience">
+    <div class="block" v-for="experience in person.experience" :key="experience.company">
       <div class="block-helper"></div>
       <div class="headline">{{experience.position}} - {{experience.company}}</h3>
         <div class="subheadline">{{experience.timeperiod}}</div>
@@ -109,7 +109,7 @@
       </div>
     </div>
     <div class="section-headline">{{ lang.headings.education }}</div>
-    <div class="block" v-for="education in person.education">
+    <div class="block" v-for="education in person.education" :key="education.degree">
       <div class="block-helper"></div>
       <div class="headline">{{education.degree}}</div>
       <p class="info">
diff --git a/src/resumes/oblique.vue b/src/resumes/oblique.vue
index 1bca49e..3ae665b 100755
--- a/src/resumes/oblique.vue
+++ b/src/resumes/oblique.vue
@@ -18,7 +18,7 @@
     <div class="experience">
       <h3>{{ lang.headings.experience }}</h3>
 
-      <div class="experience-block" v-for="experience in person.experience">
+      <div class="experience-block" v-for="experience in person.experience" :key="experience.company">
         <div class="row">
           <span class="job-title"> {{experience.position}} </span>
           <i class="material-icons">details</i>
@@ -33,7 +33,7 @@
     </div>
     <div class="education">
       <h3>{{ lang.headings.education }}</h3>
-      <div class="education-block" v-for="education in person.education">
+      <div class="education-block" v-for="education in person.education" :key="education.degree">
         <div class="row">
           <span class="degree">{{education.degree}}</span>
         </div>
@@ -44,7 +44,7 @@
     </div>
     <div class="skill-section">
       <h3>{{ lang.headings.skills }}</h3>
-      <div class="skills" v-for="skill in person.skills">
+      <div class="skills" v-for="skill in person.skills" :key="skill.name">
         <div class="skill-block">
           <i class="material-icons">details</i>
           <span class="skill">{{skill.name}}</span>
diff --git a/src/resumes/purple.vue b/src/resumes/purple.vue
index cd68e6e..212fe1c 100644
--- a/src/resumes/purple.vue
+++ b/src/resumes/purple.vue
@@ -20,19 +20,23 @@
         <div id="experience-container">
             <h2 id="experience-title">{{ lang.headings.experience }}</h2>
             <div class="spacer"></div>
-            <div class="experience" v-for="experience in person.experience">
+            <div class="experience" v-for="experience in person.experience" :key="experience.company">
                 <h2 class="company">{{experience.company}}</h2>
                 <p class="job-info"><span class="job-title">{{experience.position}} | </span><span class="experience-timeperiod">{{experience.timeperiod}}</span></p>
                 <p class="job-description" v-if="experience.description">{{experience.description}}</p>
                 <ul v-if="experience.list" >
-                    <li v-for="item in experience.list"><span class="list-item-black">{{item}}</span></li>
+                    <li v-for="(item, index) in experience.list" :key="index">
+                      <span class="list-item-black">
+                        {{item}}
+                      </span>
+                    </li>
                 </ul>
             </div>
         </div>
         <div id="education-container">
             <h2 id="education-title">{{ lang.headings.education }}</h2>
             <div class="spacer"></div>
-            <div class="education" v-for="education in person.education">
+            <div class="education" v-for="education in person.education" :key="education.degree">
                 <h2 class="education-description">{{education.description}}</h2>
                 <p><span class="degree">{{education.degree}} | </span><span class="education-timeperiod">{{education.timeperiod}}</span></p>
             </div>
@@ -42,7 +46,11 @@
             <div class="spacer"></div>
             <p id="skill-description">{{person.skillDescription}}</p>
             <ul id="skill-list">
-                <li class="skill" v-for="skill in person.skills"><span class="list-item-black">{{skill.name}}</span></li>
+                <li class="skill" v-for="skill in person.skills" :key="skill.name">
+                  <span class="list-item-black">
+                    {{skill.name}}
+                  </span>
+                </li>
             </ul>
         </div>
     </div>
diff --git a/src/resumes/side-bar.vue b/src/resumes/side-bar.vue
index 5b3cee5..df0a752 100755
--- a/src/resumes/side-bar.vue
+++ b/src/resumes/side-bar.vue
@@ -48,7 +48,7 @@
       <div class="right-col">
           <div class="experience">
               <h3>{{ lang.headings.experience }}</h3>
-                  <div class="experience-block" v-for="experience in person.experience">
+                  <div class="experience-block" v-for="experience in person.experience" :key="experience.company">
                       <div class="row">
                           <span class="company"> {{experience.company}} -</span>
                           <span class="job-title"> {{experience.position}} </span>
@@ -63,7 +63,7 @@
           </div>
           <div class="education">
               <h3>{{ lang.headings.education }}</h3>
-                  <div class="education-block" v-for="education in person.education">
+                  <div class="education-block" v-for="education in person.education" :key="education.degree">
                       <div class="row">
                           <span class="degree">{{education.degree}}</span>
                       </div>
@@ -75,7 +75,7 @@
           <div class="skills-block">
               <h3>{{ lang.headings.skills }}</h3>
               <div class="skills">
-                      <div class="skill" v-for="skill in person.skills">
+                      <div class="skill" v-for="skill in person.skills" :key="skill.name">
                           <span class="skill-name">{{skill.name}}</span>
                       </div>
               </div>