diff --git a/DESCRIPTION b/DESCRIPTION
index e2efcb3..cf7433f 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: RKorAPClient
 Type: Package
 Title: 'KorAP' Web Service Client Package
-Version: 0.5.8.9001
+Version: 0.5.9
 Authors@R:
     c(person(given = "Marc",
              family = "Kupietz",
diff --git a/NEWS.md b/NEWS.md
index 930b2ff..f077ebf 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,7 +1,7 @@
-# RKorAPClient 0.5.8.9001
+# RKorAPClient 0.5.9
 
 ## Changes
-- A hash for the last index revision is queried on every new connection, making sure that no stale cache results are re-used.
+- The local cache is now notified of new corpus index revisions when new connections are established. As a side effect, with v0.5.9 existing caches are invalidated. 
 
 # RKorAPClient 0.5.8
 
diff --git a/cran-comments.md b/cran-comments.md
index 62f8406..128a58b 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,3 +1,6 @@
+## Relation between 0.5.9 and 0.5.8
+If you haven't checked 0.5.8 yet, you can just skip it and use 0.5.9 (unless 0.5.8 is OK and 0.5.9 not)
+
 ## Test environments
 * local Fedora 32 with R version 3.6.3
 * CentOS 7.7
@@ -7,8 +10,8 @@
 
 ## local R CMD check results
 ```
-── R CMD check results ──────────────────────────── RKorAPClient 0.5.7.9001 ────
-Duration: 5m 31.9s
+── R CMD check results ───────────────────────────────── RKorAPClient 0.5.9 ────
+Duration: 3m 38.4s
 
 0 errors ✓ | 0 warnings ✓ | 0 notes ✓
 
@@ -17,10 +20,10 @@
 
 ## https://cran.rstudio.com//web/checks/check_results_RKorAPClient.html
 
-Fixed donttest compatibility issues with dplyr 1.0.0:
+Fixed already in v0.5.8: Donttest compatibility issues with dplyr 1.0.0:
 https://www.stats.ox.ac.uk/pub/bdr/donttest/RKorAPClient.out
 
-## R-hub on Winodows Server 2008
+## R-hub on Windows Server 2008 R2 SP1, R-devel, 32/64 bit
 … reports the following dependency issue which, however, does not appear on any other test build (win builder, mac, Ubuntu, Fedora) and seems unrelated to RKorAPClient:
 
 ```
@@ -70,3 +73,6 @@
 
  899#> * removing 'C:/Users/USERSHFYCydkVg/R/RKorAPClient'
 ```
+
+## testthat duration
+I've tried to reduce the time required for the tests.