diff --git a/packages/opentelemetry-core/src/common/time.ts b/packages/opentelemetry-core/src/common/time.ts
index 8d3051b00c1..89f5bfd3f60 100644
--- a/packages/opentelemetry-core/src/common/time.ts
+++ b/packages/opentelemetry-core/src/common/time.ts
@@ -111,7 +111,7 @@ export function hrTimeDuration(
 export function hrTimeToTimeStamp(time: api.HrTime): string {
   const precision = NANOSECOND_DIGITS;
   const tmp = `${'0'.repeat(precision)}${time[1]}Z`;
-  const nanoString = tmp.substr(tmp.length - precision - 1);
+  const nanoString = tmp.substring(tmp.length - precision - 1);
   const date = new Date(time[0] * 1000).toISOString();
   return date.replace('000Z', nanoString);
 }
diff --git a/packages/opentelemetry-sdk-trace-base/src/Span.ts b/packages/opentelemetry-sdk-trace-base/src/Span.ts
index b5f3b75b4b5..39a8b303080 100644
--- a/packages/opentelemetry-sdk-trace-base/src/Span.ts
+++ b/packages/opentelemetry-sdk-trace-base/src/Span.ts
@@ -377,7 +377,7 @@ export class Span implements APISpan, ReadableSpan {
     if (value.length <= limit) {
       return value;
     }
-    return value.substr(0, limit);
+    return value.substring(0, limit);
   }
 
   /**