diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 23145c9..9657a1a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,6 +9,7 @@ jobs:
       fail-fast: false
       matrix:
         dbimage:
+          - postgres:14
           - postgres:13
           - postgres:12
           - postgres:11
@@ -22,7 +23,6 @@ jobs:
           - 'swiftlang/swift:nightly-main'
         swiftos:
           - focal
-          - amazonlinux2
         dependent:
           - fluent-postgres-driver
     container: ${{ format('{0}-{1}', matrix.swiftver, matrix.swiftos) }}
@@ -50,12 +50,6 @@ jobs:
           POSTGRES_HOST_AUTH_METHOD: ${{ matrix.dbauth }}
           POSTGRES_INITDB_ARGS: --auth-host=${{ matrix.dbauth }}
     steps:
-      - name: Workaround SPM incompatibility with old Git on CentOS 7
-        if: ${{ contains(matrix.swiftos, 'centos7') }}
-        run: |
-          yum install -y make libcurl-devel
-          git clone https://github.com/git/git -bv2.28.0 --depth 1 && cd git
-          make prefix=/usr -j all install NO_OPENSSL=1 NO_EXPAT=1 NO_TCLTK=1 NO_GETTEXT=1 NO_PERL=1
       - name: Check out package
         uses: actions/checkout@v2
         with:
@@ -81,7 +75,7 @@ jobs:
       matrix:
         xcode:
           - latest-stable
-          - latest
+          #- latest
         dbauth:
           - trust
           - md5
@@ -90,9 +84,10 @@ jobs:
           - postgresql@11
           - postgresql@12
           - postgresql@13
+          - postgresql@14
         dependent:
           - fluent-postgres-driver
-    runs-on: macos-latest
+    runs-on: macos-11
     env:
       LOG_LEVEL: debug
       POSTGRES_HOSTNAME: 127.0.0.1
diff --git a/Package.swift b/Package.swift
index adf73b7..58e652c 100644
--- a/Package.swift
+++ b/Package.swift
@@ -11,7 +11,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/vapor/postgres-nio.git", from: "1.4.0"),
-        .package(url: "https://github.com/vapor/sql-kit.git", from: "3.5.0"),
+        .package(url: "https://github.com/vapor/sql-kit.git", from: "3.12.0"),
         .package(url: "https://github.com/vapor/async-kit.git", from: "1.0.0"),
     ],
     targets: [
diff --git a/Sources/PostgresKit/PostgresDialect.swift b/Sources/PostgresKit/PostgresDialect.swift
index 4c45576..fb86e12 100644
--- a/Sources/PostgresKit/PostgresDialect.swift
+++ b/Sources/PostgresKit/PostgresDialect.swift
@@ -51,4 +51,8 @@ public struct PostgresDialect: SQLDialect {
             alterColumnDefinitionTypeKeyword: SQLRaw("SET DATA TYPE")
         )
     }
+    
+    public var upsertSyntax: SQLUpsertSyntax {
+        .standard
+    }
 }
diff --git a/Tests/PostgresKitTests/PostgresKitTests.swift b/Tests/PostgresKitTests/PostgresKitTests.swift
index 52b608b..e6a8e16 100644
--- a/Tests/PostgresKitTests/PostgresKitTests.swift
+++ b/Tests/PostgresKitTests/PostgresKitTests.swift
@@ -20,6 +20,14 @@ class PostgresKitTests: XCTestCase {
             on: self.eventLoopGroup
         )
         defer { pool.shutdown() }
+        // Postgres seems to take much longer on initial connections when using SCRAM-SHA-256 auth,
+        // which causes XCTest to bail due to the first measurement having a very high deviation.
+        // Spin the pool a bit before running the measurement to warm it up.
+        for _ in 1...25 {
+            _ = try! pool.withConnection { conn in
+                return conn.query("SELECT 1;")
+            }.wait()
+        }
         self.measure {
             for _ in 1...100 {
                 _ = try! pool.withConnection { conn in