diff --git a/Makefile b/Makefile
index 0b0cf683e..0d5f84f84 100644
--- a/Makefile
+++ b/Makefile
@@ -55,4 +55,4 @@ depends:
 
 # 6.9.1
 upgrade-wrapper:
-	./gradlew wrapper --gradle-version=7.3 --distribution-type=bin
\ No newline at end of file
+	./gradlew wrapper --gradle-version=7.3.1 --distribution-type=bin
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 26acfeadd..4bda627ae 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
     id 'org.jetbrains.kotlin.plugin.serialization' version '1.6.0' apply false
     id 'com.github.gmazzo.buildconfig' version '3.0.3' apply false
     id "com.github.ben-manes.versions" version '0.39.0' apply false
-    id "org.flywaydb.flyway" version "8.0.5"
+    id "org.flywaydb.flyway" version "8.2.0"
 }
 
 ext {
@@ -84,9 +84,10 @@ ext {
 allprojects {
     description = 'ReadingBat Core'
     group 'com.github.readingbat'
-    version '1.23.8'
+    version '1.23.9'
 
     apply plugin: 'application'
+    apply plugin: 'java-library'  // gradle 7
     apply plugin: 'maven-publish' // required for jitpack.io install  // gradle 7
     apply plugin: 'org.jmailen.kotlinter'
     apply plugin: 'org.jetbrains.kotlin.jvm'
@@ -96,11 +97,7 @@ allprojects {
 
     repositories {
         mavenLocal()
-        maven { url = 'https://kotlin.bintray.com/ktor' }
-        maven { url = 'https://kotlin.bintray.com/kotlinx' }
-        maven { url = 'https://kotlin.bintray.com/kotlin-js-wrappers' }
         maven { url = 'https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-js-wrappers' }
-        maven { url = 'https://maven-central.storage-download.googleapis.com/repos/central/data/' }
         mavenCentral()
         maven { url = 'https://jitpack.io' }
     }
diff --git a/gradle.properties b/gradle.properties
index b53cb5e6f..a3080d3e7 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,11 +4,10 @@ org.gradle.daemon=true
 org.gradle.configureondemand=true
 org.gradle.parallel=true
 org.gradle.caching=true
-# -XX:MaxPermSize=512m
 org.gradle.jvmargs=-Xmx2048m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
 cloud_version=1.4.0
 commons_version=1.9
-coroutines_version=1.5.2
+coroutines_version=1.6.0-RC
 css_version=1.0.0-pre.156-kotlin-1.5.0
 exposed_version=0.36.2
 flexmark_version=0.62.2
@@ -16,17 +15,17 @@ github_api_version=1.135
 gson_version=2.8.9
 hikari_version=5.0.0
 java_script_version=2.0.0
-kotest_version=5.0.0.RC
+kotest_version=5.0.1
 kotest_ktor_version=4.4.3
 kotlin_version=1.6.0
-ktor_version=1.6.5
-logback_version=1.2.6
-logging_version=2.0.11
+ktor_version=1.6.6
+logback_version=1.2.7
+logging_version=2.1.0
 pgjdbc_version=0.8.9
 postgres_version=42.3.1
 prometheus_version=0.12.0
 proxy_version=1.10.1
 redis_version=3.7.0
 serialization_version=1.3.1
-sendgrid_version=4.8.0
+sendgrid_version=4.8.1
 utils_version=1.19.0
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index e750102e0..84d1f85fd 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/jitpack.io b/jitpack.io
deleted file mode 100644
index 5e027de01..000000000
--- a/jitpack.io
+++ /dev/null
@@ -1,6 +0,0 @@
-jdk:
-  - openjdk11
-install:
-  - ./gradlew build -xtest
-  - ./gradlew publishToMavenLocal
-
diff --git a/readingbat-core/src/main/kotlin/com/github/readingbat/dsl/ContentDsl.kt b/readingbat-core/src/main/kotlin/com/github/readingbat/dsl/ContentDsl.kt
index c9c2e2718..2f8cd18d6 100644
--- a/readingbat-core/src/main/kotlin/com/github/readingbat/dsl/ContentDsl.kt
+++ b/readingbat-core/src/main/kotlin/com/github/readingbat/dsl/ContentDsl.kt
@@ -140,7 +140,7 @@ internal fun addImports(code: String, variableName: String): String {
       .filter { code.contains("${it.javaObjectType.simpleName}(") }   // See if the class is referenced
       .map { "import ${it.javaObjectType.name}" }                           // Convert to import stmt
       .filterNot { code.contains(it) }                                      // Do not include if import already present
-      .joinToString("\n")                                         // Turn into String
+      .joinToString("\n")                                          // Turn into String
 
   val funcImports =
     listOf(::readingBatContent)
@@ -148,7 +148,7 @@ internal fun addImports(code: String, variableName: String): String {
       .filter { code.contains("${it.name}(") }  // See if the function is referenced
       .map { "import ${it.fqMethodName}" }            // Convert to import stmt
       .filterNot { code.contains(it) }                // Do not include is import already present
-      .joinToString("\n")                   // Turn into String
+      .joinToString("\n")                    // Turn into String
 
   val imports = listOf(classImports, funcImports).filter { it.isNotBlank() }.joinToString("\n")
   return """