diff --git a/CMakeLists.txt b/CMakeLists.txt
index f4ab5f4..2d278ed 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -91,7 +91,7 @@ CPMFindPackage(
 
 CPMFindPackage(
   NAME ViennaLS
-  GIT_TAG viennacore
+  VERSION 4.0.0
   GIT_REPOSITORY "https://github.com/ViennaTools/ViennaLS"
   EXCLUDE_FROM_ALL ${VIENNACS_BUILD_PYTHON})
 
diff --git a/README.md b/README.md
index c79943d..064f919 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ We recommend using [CPM.cmake](https://github.com/cpm-cmake/CPM.cmake) to consum
 
 * Installation with CPM
   ```cmake
-  CPMAddPackage("gh:viennatools/viennacs@3.0.0")
+  CPMAddPackage("gh:viennatools/viennacs@1.0.0")
   ```
 
 * With a local installation