diff --git a/src/lib/parseText.js b/src/lib/parseText.js
index 7c36c95..64107d7 100644
--- a/src/lib/parseText.js
+++ b/src/lib/parseText.js
@@ -1,3 +1,5 @@
+const sentenceEndings = '.!?:;'
+
 /**
  * Returns an object containing the segmented text and metainfo about word and
  * sentence beginnings
@@ -24,7 +26,9 @@ export function parseText(text, maxLength) {
     curIdx += fragments.length
 
     // set flag if next word is sentence beginning
-    sentenceFlag = word.endsWith('.')
+    sentenceFlag = sentenceEndings
+      .split('')
+      .some(ending => word.endsWith(ending))
   }
 
   return { segments, words, sentences }