diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
new file mode 100644
index 0000000..023981b
--- /dev/null
+++ b/.github/workflows/release.yaml
@@ -0,0 +1,26 @@
+name: Validate R version tag
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: read
+
+jobs:
+  validate-version:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Validate tag against DESCRIPTION
+        env:
+          RELEASE_TAG: ${{ github.ref_name }}
+        run: |
+          package_version="$(awk -F ': *' '$1 == "Version" {print $2}' DESCRIPTION)"
+          if [ "$RELEASE_TAG" != "v$package_version" ]; then
+            echo "::error::Release tag $RELEASE_TAG does not match DESCRIPTION version $package_version"
+            exit 1
+          fi
diff --git a/DESCRIPTION b/DESCRIPTION
index 070b801..7db99e2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: CyteTypeR
 Title: CyteType for R
-Version: 0.4.3
+Version: 0.5.1
 Description: CyteTypeR is the R version of CyteType python package.
 Authors@R: 
     person("Nygen Analytics AB", , ,"contact@nygen.io", role = c("aut", "cre"))
diff --git a/R/zzz.R b/R/zzz.R
index fd34a94..3af02e8 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -37,7 +37,7 @@
       if (package_version(latest) > package_version(current)) {
         packageStartupMessage(
           "A newer version of CyteTypeR is available (", current, " -> ", latest, "). ",
-          "Run remotes::install_github('NygenAnalytics/CyteTypeR') to update."
+          "Run devtools::install_github('NygenAnalytics/CyteTypeR') to update."
         )
       }
     }, error = function(e) NULL)
diff --git a/README.md b/README.md
index 71d6e1e..e0ce5ab 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,8 @@
 For AnnData workflows, use [CyteType](https://github.com/NygenAnalytics/CyteType).
 
 > [!IMPORTANT]
+> Already installed CyteTypeR? Open R and run `devtools::install_github("NygenAnalytics/CyteTypeR", force = TRUE)` to update to the latest version before you start.
+>
 > CyteType requires an API key. API use is free for academic and non-commercial research. Commercial API use requires a [license](#license).
 
 ## Why CyteTypeR?