diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 57b75c24f6893ac5bd20e66c0f519b64eed17457..88aef9d8d6602fda4c9f01cca6266d3404866669 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -6767,13 +6767,13 @@ (define-public python2-websocket-client
 (define-public python-atomicwrites
   (package
     (name "python-atomicwrites")
-    (version "0.1.9")
+    (version "1.0.0")
     (source (origin
              (method url-fetch)
              (uri (pypi-uri "atomicwrites" version))
              (sha256
               (base32
-               "08s05h211r07vs66r4din3swrbzb344vli041fihpg34q3lcxpvw"))))
+               "019fa4771q7fb1167yfbh6msdzcqini6v7i59rmf72mzdjd7x5qv"))))
     (build-system python-build-system)
     (synopsis "Atomic file writes in Python")
     (description "Library for atomic file writes using platform dependent tools