diff --git a/pom.xml b/pom.xml
index 3b57bca..7df39bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -55,7 +55,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
         <fs2.version>0.10.0-M6</fs2.version>
-        <cats.effect.version>0.4</cats.effect.version>
+        <cats.effect.version>2.1.3</cats.effect.version>
 
         <exist.version>3.2.0</exist.version>
         <expath-file-module-lib.version>1.0-SNAPSHOT</expath-file-module-lib.version>