diff --git a/gnu/packages/clojure.scm b/gnu/packages/clojure.scm
index b946928b8c9..c70b23d1d52 100644
--- a/gnu/packages/clojure.scm
+++ b/gnu/packages/clojure.scm
@@ -496,7 +496,7 @@ defining and using monads and useful monadic functions.")
 (define-public clojure-core-async
   (package
     (name "clojure-core-async")
-    (version "1.6.681")
+    (version "1.8.741")
     (home-page "https://github.com/clojure/core.async")
     (source (origin
               (method git-fetch)
@@ -506,7 +506,7 @@ defining and using monads and useful monadic functions.")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "1j9yz14hy2qs8g3flsqkn1sx9c0qlr5mmpy6ab1zml9yhbw5arzg"))))
+                "1m6lir2xr119yxz483cz0rfw4k3a40qmmsiwl2y7kyxy65vab60z"))))
     (build-system clojure-build-system)
     (arguments
      '(#:source-dirs '("src/main/clojure")