diff --git a/.github/workflows/gradle-push.yml b/.github/workflows/gradle-push.yml
index 5312263..423e5de 100644
--- a/.github/workflows/gradle-push.yml
+++ b/.github/workflows/gradle-push.yml
@@ -38,8 +38,8 @@ jobs:
     - name: Set up JDK
       uses: actions/setup-java@v4
       with:
-        java-version: 8
-        distribution: adopt
+        java-version: 17
+        distribution: 'temurin'
 
     - uses: actions/cache@v4
       with:
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 470bbc6..b15d277 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -18,8 +18,8 @@ jobs:
     - name: Set up JDK
       uses: actions/setup-java@v4
       with:
-        java-version: 8
-        distribution: adopt
+        java-version: 17
+        distribution: 'temurin'
 
     - uses: actions/cache@v4
       with:
diff --git a/build.gradle.kts b/build.gradle.kts
index d0b2acf..232d362 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -22,19 +22,14 @@ repositories {
 }
 
 dependencies {
-    implementation(kotlin("stdlib-jdk8"))
+    implementation(kotlin("stdlib"))
+    implementation("org.eclipse.jgit:org.eclipse.jgit:7.1.0.202411261347-r")
+    implementation("org.eclipse.jgit:org.eclipse.jgit.gpg.bc:7.1.0.202411261347-r")
+    implementation("org.slf4j:slf4j-api:1.7.36")
+
     testImplementation(kotlin("test-junit5"))
     testImplementation("org.junit.jupiter:junit-jupiter-params")
-    testImplementation("org.assertj:assertj-core:3.26.3")
-
-    implementation("org.eclipse.jgit:org.eclipse.jgit:5.13.3.202401111512-r")
-    implementation("org.eclipse.jgit:org.eclipse.jgit.gpg.bc:5.13.3.202401111512-r") {
-        exclude(group = "org.bouncycastle")
-    }
-    implementation("org.bouncycastle:bcpg-jdk18on:1.79")
-    implementation("org.bouncycastle:bcutil-jdk18on:1.79")
-    implementation("org.bouncycastle:bcpkix-jdk18on:1.79")
-    implementation("org.slf4j:slf4j-api:1.7.36")
+    testImplementation("org.assertj:assertj-core:3.27.2")
 }
 
 gradlePlugin {
diff --git a/src/main/kotlin/git/semver/plugin/scm/GitProvider.kt b/src/main/kotlin/git/semver/plugin/scm/GitProvider.kt
index 8c7e0a8..7a94d44 100644
--- a/src/main/kotlin/git/semver/plugin/scm/GitProvider.kt
+++ b/src/main/kotlin/git/semver/plugin/scm/GitProvider.kt
@@ -13,6 +13,7 @@ import org.eclipse.jgit.revwalk.RevWalk
 import org.eclipse.jgit.util.FS
 import org.slf4j.LoggerFactory
 import java.io.File
+import java.util.*
 
 internal class GitProvider(private val settings: SemverSettings) {
     companion object {
@@ -131,7 +132,7 @@ internal class GitProvider(private val settings: SemverSettings) {
                 revWalk.parseHeaders(parent)
                 yield(getCommit(parent, revWalk))
             }
-        }, commit.authorIdent.name, commit.authorIdent.emailAddress, commit.authorIdent.`when`)
+        }, commit.authorIdent.name, commit.authorIdent.emailAddress, Date.from(commit.authorIdent.whenAsInstant))
     }
 
     internal fun checkDirty(noDirtyCheck: Boolean, isClean: Boolean) {