diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8d8bb4d..9045411 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,8 +31,10 @@ jobs:
         shell: bash
         run: git config --global core.autocrlf false
 
-      - name: Checkout current branch (fast)
+      - name: Checkout current branch (full)
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
       - name: Setup Java and Scala
         uses: olafurpg/setup-scala@v5
@@ -110,8 +112,10 @@ jobs:
         if: contains(runner.os, 'windows')
         run: git config --global core.autocrlf false
 
-      - name: Checkout current branch (fast)
+      - name: Checkout current branch (full)
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
       - name: Setup Java and Scala
         uses: olafurpg/setup-scala@v5
diff --git a/src/main/scala/sbtghactions/GenerativePlugin.scala b/src/main/scala/sbtghactions/GenerativePlugin.scala
index cb19235..20ec9a2 100644
--- a/src/main/scala/sbtghactions/GenerativePlugin.scala
+++ b/src/main/scala/sbtghactions/GenerativePlugin.scala
@@ -547,7 +547,7 @@ ${indent(jobs.map(compileJob(_, sbt)).mkString("\n\n"), 1)}"""
       }
 
       autoCrlfOpt ::: List(
-        WorkflowStep.Checkout,
+        WorkflowStep.CheckoutFull,
         WorkflowStep.SetupScala) :::
         githubWorkflowGeneratedCacheSteps.value.toList
     },
diff --git a/src/main/scala/sbtghactions/WorkflowStep.scala b/src/main/scala/sbtghactions/WorkflowStep.scala
index 59150ac..ba6e32d 100644
--- a/src/main/scala/sbtghactions/WorkflowStep.scala
+++ b/src/main/scala/sbtghactions/WorkflowStep.scala
@@ -25,7 +25,11 @@ sealed trait WorkflowStep extends Product with Serializable {
 
 object WorkflowStep {
 
-  val CheckoutFull: WorkflowStep = Use("actions", "checkout", "v1", name = Some("Checkout current branch (full)"))
+  val CheckoutFull: WorkflowStep = Use(
+    "actions", "checkout", "v2",
+    name = Some("Checkout current branch (full)"),
+    params = Map("fetch-depth" -> "0"))
+
   val Checkout: WorkflowStep = Use("actions", "checkout", "v2", name = Some("Checkout current branch (fast)"))
 
   val SetupScala: WorkflowStep = Use("olafurpg", "setup-scala", "v5", name = Some("Setup Java and Scala"), params = Map("java-version" -> s"$${{ matrix.java }}"))
diff --git a/src/sbt-test/sbtghactions/check-and-regenerate/expected-ci.yml b/src/sbt-test/sbtghactions/check-and-regenerate/expected-ci.yml
index b987470..783dd4b 100644
--- a/src/sbt-test/sbtghactions/check-and-regenerate/expected-ci.yml
+++ b/src/sbt-test/sbtghactions/check-and-regenerate/expected-ci.yml
@@ -34,8 +34,10 @@ jobs:
             test: is
     runs-on: ${{ matrix.os }}
     steps:
-      - name: Checkout current branch (fast)
+      - name: Checkout current branch (full)
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
       - name: Setup Java and Scala
         uses: olafurpg/setup-scala@v5
@@ -109,8 +111,10 @@ jobs:
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
-      - name: Checkout current branch (fast)
+      - name: Checkout current branch (full)
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
       - name: Setup Java and Scala
         uses: olafurpg/setup-scala@v5
diff --git a/src/sbt-test/sbtghactions/non-existent-target/.github/workflows/ci.yml b/src/sbt-test/sbtghactions/non-existent-target/.github/workflows/ci.yml
index 13b84fc..2d03b89 100644
--- a/src/sbt-test/sbtghactions/non-existent-target/.github/workflows/ci.yml
+++ b/src/sbt-test/sbtghactions/non-existent-target/.github/workflows/ci.yml
@@ -26,8 +26,10 @@ jobs:
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
-      - name: Checkout current branch (fast)
+      - name: Checkout current branch (full)
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
       - name: Setup Java and Scala
         uses: olafurpg/setup-scala@v5
@@ -98,8 +100,10 @@ jobs:
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
-      - name: Checkout current branch (fast)
+      - name: Checkout current branch (full)
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
       - name: Setup Java and Scala
         uses: olafurpg/setup-scala@v5