diff --git a/.azure/ci.yml b/.azure/ci.yml
index a7873d0a6..43a7fce98 100644
--- a/.azure/ci.yml
+++ b/.azure/ci.yml
@@ -13,7 +13,7 @@ variables:
   - name: DOTNET_CLI_TELEMETRY_OPTOUT
     value: 'true'
   - name: INPUT_VERSIONSPEC
-    value: '6.0.x'
+    value: '6.1.x'
   - name: INPUT_INCLUDEPRERELEASE
     value: 'false'
   - name: INPUT_IGNOREFAILEDSOURCES
diff --git a/.azure/example-7.yml b/.azure/example-7.yml
index c8e4eeaf2..a3102cc46 100644
--- a/.azure/example-7.yml
+++ b/.azure/example-7.yml
@@ -18,7 +18,7 @@ jobs:
       - task: gitversion/setup@3.1.1
         displayName: Install GitVersion
         inputs:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - task: gitversion/execute@3.1.1
         displayName: Determine Version
diff --git a/.azure/example-8.yml b/.azure/example-8.yml
index 370e1b41c..dc8e00404 100644
--- a/.azure/example-8.yml
+++ b/.azure/example-8.yml
@@ -18,7 +18,7 @@ jobs:
       - task: gitversion/setup@3.1.1
         displayName: Install GitVersion
         inputs:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - task: gitversion/execute@3.1.1
         displayName: Determine Version
diff --git a/.azure/example-9.yml b/.azure/example-9.yml
index 02463ab96..f8e957fd6 100644
--- a/.azure/example-9.yml
+++ b/.azure/example-9.yml
@@ -21,7 +21,7 @@ stages:
           - task: gitversion/setup@3.1.1
             displayName: Install GitVersion
             inputs:
-              versionSpec: '6.0.x'
+              versionSpec: '6.1.x'
 
           - task: gitversion/execute@3.1.1
             displayName: Determine Version
diff --git a/.github/workflows/checkout-path.yml b/.github/workflows/checkout-path.yml
index 145580169..ad4bd9b4f 100644
--- a/.github/workflows/checkout-path.yml
+++ b/.github/workflows/checkout-path.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Install GitVersion
         uses: gittools/actions/gitversion/setup@main
         with:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - name: Determine version
         id: gitversion
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 36c9b188e..260c1b411 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,7 +55,7 @@ jobs:
     - name: gitversion/setup
       uses: ./gitversion/setup
       with:
-        versionSpec: '6.0.x'
+        versionSpec: '6.1.x'
     - name: gitversion/command (showvariable)
       uses: ./gitversion/command
       with:
diff --git a/.github/workflows/example-7.yml b/.github/workflows/example-7.yml
index b3df623f0..e569cad4f 100644
--- a/.github/workflows/example-7.yml
+++ b/.github/workflows/example-7.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Install GitVersion
         uses: gittools/actions/gitversion/setup@v3.1.1
         with:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - name: Determine Version
         id: version_step # step id used as reference for output values
diff --git a/.github/workflows/example-8.yml b/.github/workflows/example-8.yml
index c1f2a9138..08cf94509 100644
--- a/.github/workflows/example-8.yml
+++ b/.github/workflows/example-8.yml
@@ -25,7 +25,7 @@ jobs:
       - name: Install GitVersion
         uses: gittools/actions/gitversion/setup@v3.1.1
         with:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - name: Determine Version
         id: version_step # step id used as reference for output values
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0217ee815..e508f39ac 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Install GitVersion
         uses: ./gitversion/setup
         with:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
       - name: Install GitReleaseManager
         uses: ./gitreleasemanager/setup
         with:
diff --git a/dist/azure/gitversion/setup/task.json b/dist/azure/gitversion/setup/task.json
index 511c2996d..ed65e9305 100644
--- a/dist/azure/gitversion/setup/task.json
+++ b/dist/azure/gitversion/setup/task.json
@@ -28,7 +28,7 @@
       "label": "The version spec",
       "defaultValue": "",
       "required": true,
-      "helpMarkDown": "Required version in the form of 6.0.x or exact version like 6.0.0"
+      "helpMarkDown": "Required version in the form of 6.1.x or exact version like 6.0.0"
     },
     {
       "name": "includePrerelease",
diff --git a/docs/examples/azure/gitversion/command.md b/docs/examples/azure/gitversion/command.md
index bc154b086..49ffe7be9 100644
--- a/docs/examples/azure/gitversion/command.md
+++ b/docs/examples/azure/gitversion/command.md
@@ -13,7 +13,7 @@ steps:
   - task: gitversion/setup@3.1.1
     displayName: Install GitVersion
     inputs:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
 ```
 
 These steps are omitted from the examples for brevity.
diff --git a/docs/examples/azure/gitversion/execute.md b/docs/examples/azure/gitversion/execute.md
index 8e1dcbdf1..e9aa6c11b 100644
--- a/docs/examples/azure/gitversion/execute.md
+++ b/docs/examples/azure/gitversion/execute.md
@@ -13,7 +13,7 @@ steps:
   - task: gitversion/setup@3.1.1
     displayName: Install GitVersion
     inputs:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
 ```
 
 These steps are omitted from the examples for brevity.
@@ -253,7 +253,7 @@ jobs:
       - task: gitversion/setup@3.1.1
         displayName: Install GitVersion
         inputs:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - task: gitversion/execute@3.1.1
         displayName: Determine Version
@@ -323,7 +323,7 @@ jobs:
       - task: gitversion/setup@3.1.1
         displayName: Install GitVersion
         inputs:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - task: gitversion/execute@3.1.1
         displayName: Determine Version
@@ -414,7 +414,7 @@ stages:
           - task: gitversion/setup@3.1.1
             displayName: Install GitVersion
             inputs:
-              versionSpec: '6.0.x'
+              versionSpec: '6.1.x'
 
           - task: gitversion/execute@3.1.1
             displayName: Determine Version
diff --git a/docs/examples/azure/gitversion/setup.md b/docs/examples/azure/gitversion/setup.md
index bea88a96e..3ce298489 100644
--- a/docs/examples/azure/gitversion/setup.md
+++ b/docs/examples/azure/gitversion/setup.md
@@ -10,7 +10,7 @@ The Setup GitVersion task accepts the following inputs:
 
 ```yaml
 versionSpec:
-  description: Required version in the form of 6.0.x or exact version like 6.0.0.
+  description: Required version in the form of 6.1.x or exact version like 6.0.0.
   required: true
   default: ''
 includePrerelease:
@@ -48,7 +48,7 @@ steps:
   - task: gitversion/setup@3.1.1
     displayName: Install GitVersion
     inputs:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
 ```
 
 ### Example 2
@@ -72,7 +72,7 @@ steps:
   - task: gitversion/setup@3.1.1
     displayName: Install GitVersion
     inputs:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
       includePrerelease: true
 ```
 
@@ -85,6 +85,6 @@ steps:
   - task: gitversion/setup@3.1.1
     displayName: Install GitVersion
     inputs:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
       preferLatestVersion: true
 ```
diff --git a/docs/examples/github/gitversion/command.md b/docs/examples/github/gitversion/command.md
index 86f8763b1..2b5c53580 100644
--- a/docs/examples/github/gitversion/command.md
+++ b/docs/examples/github/gitversion/command.md
@@ -15,7 +15,7 @@ steps:
   - name: Install GitVersion
     uses: gittools/actions/gitversion/setup@v3.1.1
     with:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
 ```
 
 These steps are omitted from the examples for brevity.
diff --git a/docs/examples/github/gitversion/execute.md b/docs/examples/github/gitversion/execute.md
index 9c93e269a..e813ecdac 100644
--- a/docs/examples/github/gitversion/execute.md
+++ b/docs/examples/github/gitversion/execute.md
@@ -15,7 +15,7 @@ steps:
   - name: Install GitVersion
     uses: gittools/actions/gitversion/setup@v3.1.1
     with:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
 ```
 
 These steps are omitted from the examples for brevity.
@@ -248,7 +248,7 @@ jobs:
       - name: Install GitVersion
         uses: gittools/actions/gitversion/setup@v3.1.1
         with:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - name: Determine Version
         id: version_step # step id used as reference for output values
@@ -338,7 +338,7 @@ jobs:
       - name: Install GitVersion
         uses: gittools/actions/gitversion/setup@v3.1.1
         with:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - name: Determine Version
         id: version_step # step id used as reference for output values
diff --git a/docs/examples/github/gitversion/setup.md b/docs/examples/github/gitversion/setup.md
index 58d3849c3..6b3d8dbf3 100644
--- a/docs/examples/github/gitversion/setup.md
+++ b/docs/examples/github/gitversion/setup.md
@@ -10,7 +10,7 @@ The Setup GitVersion action accepts the following inputs:
 
 ```yaml
 versionSpec:
-  description: Required version in the form of 6.0.x or exact version like 6.0.0.
+  description: Required version in the form of 6.1.x or exact version like 6.0.0.
   required: true
   default: ''
 includePrerelease:
@@ -47,7 +47,7 @@ steps:
   - name: Install GitVersion
     uses: gittools/actions/gitversion/setup@v3.1.1
     with:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
 ```
 
 ### Example 2
@@ -71,7 +71,7 @@ steps:
   - name: Install GitVersion
     uses: gittools/actions/gitversion/setup@v3.1.1
     with:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
       includePrerelease: true
 ```
 
@@ -84,6 +84,6 @@ steps:
   - name: Install GitVersion
     uses: gittools/actions/gitversion/setup@v3.1.1
     with:
-      versionSpec: '6.0.x'
+      versionSpec: '6.1.x'
       preferLatestVersion: true
 ```
diff --git a/docs/versions.md b/docs/versions.md
index b3ebf4712..fc8d7cb98 100644
--- a/docs/versions.md
+++ b/docs/versions.md
@@ -5,3 +5,4 @@
 | v1.x             | `>=5.2.0 <6.1.0` | `>=0.10.0 <0.18.0` | `>=0.10.0 <0.20.0` |          2.220.0          |
 | v2.x             | `>=5.2.0 <6.1.0` | `>=0.10.0 <0.20.0` | `>=0.20.0`         |          3.224.0          |
 | v3.x             | `>=5.2.0 <6.1.0` | `>=0.18.0 <0.20.0` | `>=0.20.0`         |          3.224.0          |
+| v4.x             | `>=6.1.0 <7.0.0` | `>=0.18.0 <0.20.0` | `>=0.20.0`         |          3.224.0          |
diff --git a/envs/gitversion/setup/azure.env b/envs/gitversion/setup/azure.env
index 539fcfc97..63ba74d5b 100644
--- a/envs/gitversion/setup/azure.env
+++ b/envs/gitversion/setup/azure.env
@@ -4,4 +4,4 @@ AGENT_TOOLSDIRECTORY=./.test/tools
 INPUT_IGNOREFAILEDSOURCES=true
 INPUT_INCLUDEPRERELEASE=false
 INPUT_PREFERLATESTVERSION=false
-INPUT_VERSIONSPEC=6.0.x
+INPUT_VERSIONSPEC=6.1.x
diff --git a/envs/gitversion/setup/github.env b/envs/gitversion/setup/github.env
index dc6fdf7e8..26de299ec 100644
--- a/envs/gitversion/setup/github.env
+++ b/envs/gitversion/setup/github.env
@@ -4,4 +4,4 @@ RUNNER_TOOL_CACHE=./.test/tools
 INPUT_IGNOREFAILEDSOURCES=true
 INPUT_INCLUDEPRERELEASE=false
 INPUT_PREFERLATESTVERSION=false
-INPUT_VERSIONSPEC=6.0.x
+INPUT_VERSIONSPEC=6.1.x
diff --git a/envs/gitversion/setup/local.env b/envs/gitversion/setup/local.env
index 5961d31d7..5fbb5e534 100644
--- a/envs/gitversion/setup/local.env
+++ b/envs/gitversion/setup/local.env
@@ -4,4 +4,4 @@ AGENT_TOOLS_DIR=./.test/tools
 INPUT_IGNOREFAILEDSOURCES=true
 INPUT_INCLUDEPRERELEASE=false
 INPUT_PREFERLATESTVERSION=false
-INPUT_VERSIONSPEC=6.0.x
+INPUT_VERSIONSPEC=6.1.x
diff --git a/gitversion/setup/action.yml b/gitversion/setup/action.yml
index 3cf09aabc..219aad1d5 100644
--- a/gitversion/setup/action.yml
+++ b/gitversion/setup/action.yml
@@ -10,7 +10,7 @@ runs:
 
 inputs:
   versionSpec:
-    description: Required version in the form of 6.0.x or exact version like 6.0.0
+    description: Required version in the form of 6.1.x or exact version like 6.0.0
     required: true
     default: ''
   includePrerelease:
diff --git a/src/__tests__/tools/common/settings.spec.ts b/src/__tests__/tools/common/settings.spec.ts
index 9310d1dbe..b6574bc08 100644
--- a/src/__tests__/tools/common/settings.spec.ts
+++ b/src/__tests__/tools/common/settings.spec.ts
@@ -6,7 +6,7 @@ import { expectValidSettings } from './utils'
 describe('SettingsProvider', () => {
     it('should return SetupSettings', () => {
         const settings: SetupSettings = {
-            versionSpec: '6.0.x',
+            versionSpec: '6.1.x',
             includePrerelease: false,
             ignoreFailedSources: true,
             preferLatestVersion: false
diff --git a/src/__tests__/tools/gitversion/runner.spec.ts b/src/__tests__/tools/gitversion/runner.spec.ts
index 1a99507c7..a422678c9 100644
--- a/src/__tests__/tools/gitversion/runner.spec.ts
+++ b/src/__tests__/tools/gitversion/runner.spec.ts
@@ -16,7 +16,7 @@ describe('GitVersion Runner', () => {
 
     const toolPathVariable = 'GITVERSION_PATH'
     const toolName = 'dotnet-gitversion'
-    const versionSpec = '6.0.x'
+    const versionSpec = '6.1.x'
 
     function testOnAgent(agent: IBuildAgent): void {
         let version: string