diff --git a/abi/build.gradle b/abi/build.gradle
index 24f91a2c91..d5c681b8ec 100644
--- a/abi/build.gradle
+++ b/abi/build.gradle
@@ -10,4 +10,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/besu/build.gradle b/besu/build.gradle
index ad31addbc0..23d722d8d2 100644
--- a/besu/build.gradle
+++ b/besu/build.gradle
@@ -11,4 +11,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/codegen/build.gradle b/codegen/build.gradle
index 1276c765d6..3f8341046d 100644
--- a/codegen/build.gradle
+++ b/codegen/build.gradle
@@ -43,4 +43,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/contracts/build.gradle b/contracts/build.gradle
index cb9e0bbc8b..76f04259aa 100644
--- a/contracts/build.gradle
+++ b/contracts/build.gradle
@@ -11,4 +11,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/core/build.gradle b/core/build.gradle
index 248672d178..34a43a31b6 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -84,4 +84,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/crypto/build.gradle b/crypto/build.gradle
index 66e62ebbde..d4b0d3453a 100644
--- a/crypto/build.gradle
+++ b/crypto/build.gradle
@@ -18,4 +18,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/eea/build.gradle b/eea/build.gradle
index d5cc36dbfa..457d42b60a 100644
--- a/eea/build.gradle
+++ b/eea/build.gradle
@@ -11,4 +11,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/geth/build.gradle b/geth/build.gradle
index 4d2f81e490..6d74a6e1cc 100644
--- a/geth/build.gradle
+++ b/geth/build.gradle
@@ -11,4 +11,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/gradle/java/build.gradle b/gradle/java/build.gradle
index bdb987d4e1..df9a75411e 100644
--- a/gradle/java/build.gradle
+++ b/gradle/java/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'java'
 
-sourceCompatibility = 17
-targetCompatibility = 17
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
 
 compileJava {
     options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
diff --git a/hosted-providers/build.gradle b/hosted-providers/build.gradle
index 9d42b96a59..df271d12db 100644
--- a/hosted-providers/build.gradle
+++ b/hosted-providers/build.gradle
@@ -8,4 +8,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/parity/build.gradle b/parity/build.gradle
index e7c0ac8d84..1cc21461f5 100644
--- a/parity/build.gradle
+++ b/parity/build.gradle
@@ -12,4 +12,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/rlp/build.gradle b/rlp/build.gradle
index 6f43ab6503..06542e21c5 100644
--- a/rlp/build.gradle
+++ b/rlp/build.gradle
@@ -8,4 +8,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/tuples/build.gradle b/tuples/build.gradle
index 810a3c21cc..7a471fbb6a 100644
--- a/tuples/build.gradle
+++ b/tuples/build.gradle
@@ -6,4 +6,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}
diff --git a/utils/build.gradle b/utils/build.gradle
index 3ef0dfb701..90c4a5120b 100644
--- a/utils/build.gradle
+++ b/utils/build.gradle
@@ -8,4 +8,4 @@ signing {
     def gpgSecretKey = System.getenv('OSSRH_GPG_SECRET_KEY')
     def password = System.getenv('OSSRH_GPG_SECRET_KEY_PASSWORD')
     useInMemoryPgpKeys(gpgSecretKey, password)
-}
\ No newline at end of file
+}