diff --git a/app/build.gradle b/app/build.gradle
index 2144a34e2..f37ab3082 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -110,7 +110,7 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.core:core-ktx:1.6.0'
 
     api 'com.squareup.retrofit2:retrofit:2.9.0'
     api 'com.squareup.retrofit2:converter-gson:2.9.0'
@@ -168,10 +168,10 @@ dependencies {
     implementation 'com.makeramen:roundedimageview:2.3.0'
 
 
-    implementation 'com.github.liujingxing.rxhttp:rxhttp:2.8.0'
+    implementation 'com.github.liujingxing.rxhttp:rxhttp:2.7.3'
     // okhttp3系列组件版本最高到 4.4.1，参看 RubySSLSocketFactory
     implementation 'com.squareup.okhttp3:okhttp:4.4.1'
-    kapt 'com.github.liujingxing.rxhttp:rxhttp-compiler:2.8.0'
+    kapt 'com.github.liujingxing.rxhttp:rxhttp-compiler:2.7.3'
 
     implementation 'io.reactivex.rxjava3:rxjava:3.1.3'
     implementation 'io.reactivex.rxjava3:rxandroid:3.0.0'
@@ -207,4 +207,4 @@ dependencies {
     }
 }
 
-//lintKotlin.dependsOn(formatKotlin)
\ No newline at end of file
+//lintKotlin.dependsOn(formatKotlin)
diff --git a/build.gradle b/build.gradle
index 3c2a082db..f22cd4425 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.6.10'
+    ext.kotlin_version = '1.5.32'
     repositories {
         maven { url "https://jitpack.io" }
         maven { url "https://plugins.gradle.org/m2/" }
diff --git a/models/build.gradle b/models/build.gradle
index dfe7b7b3b..5f99e95d1 100644
--- a/models/build.gradle
+++ b/models/build.gradle
@@ -30,7 +30,7 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.core:core-ktx:1.6.0'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
 }