diff --git a/.changes/next-release/bugfix-7ce2cd74-c7b3-4856-9f9d-809240699858.json b/.changes/next-release/bugfix-7ce2cd74-c7b3-4856-9f9d-809240699858.json
new file mode 100644
index 00000000000..cd05b234a32
--- /dev/null
+++ b/.changes/next-release/bugfix-7ce2cd74-c7b3-4856-9f9d-809240699858.json
@@ -0,0 +1,4 @@
+{
+  "type" : "bugfix",
+  "description" : "Fix issue where the plugin can't read SSO tokens from disk / always returns 'Unable to load client registration'"
+}
\ No newline at end of file
diff --git a/buildSrc/src/main/kotlin/toolkit-intellij-subplugin.gradle.kts b/buildSrc/src/main/kotlin/toolkit-intellij-subplugin.gradle.kts
index 3098d992d58..d082e17fb33 100644
--- a/buildSrc/src/main/kotlin/toolkit-intellij-subplugin.gradle.kts
+++ b/buildSrc/src/main/kotlin/toolkit-intellij-subplugin.gradle.kts
@@ -35,10 +35,6 @@ configurations {
         // IDE provides Kotlin
         exclude(group = "org.jetbrains.kotlin")
         exclude(group = "org.jetbrains.kotlinx")
-
-        exclude(group = "com.fasterxml.jackson.core")
-        exclude(group = "com.fasterxml.jackson.module", "jackson-module-kotlin")
-        exclude(group = "com.fasterxml.jackson.dataformat", "jackson-dataformat-yaml")
     }
 
     configureEach {
diff --git a/buildSrc/src/main/kotlin/toolkit-publish-root-conventions.gradle.kts b/buildSrc/src/main/kotlin/toolkit-publish-root-conventions.gradle.kts
index 6a2ebaa7f13..2e4d45b570e 100644
--- a/buildSrc/src/main/kotlin/toolkit-publish-root-conventions.gradle.kts
+++ b/buildSrc/src/main/kotlin/toolkit-publish-root-conventions.gradle.kts
@@ -20,7 +20,7 @@ tasks.withType<PatchPluginXmlTask>().configureEach {
 intellijPlatform {
     instrumentCode = false
 
-    verifyPlugin {
+    pluginVerification {
         ides {
             // recommended() appears to resolve latest EAP for a product?
             ide(provider { IntelliJPlatformType.IntellijIdeaCommunity }, toolkitIntelliJ.version())
@@ -65,14 +65,6 @@ dependencies {
     }
 }
 
-configurations {
-    runtimeClasspath {
-        exclude(group = "com.fasterxml.jackson.core")
-        exclude(group = "com.fasterxml.jackson.module", "jackson-module-kotlin")
-        exclude(group = "com.fasterxml.jackson.dataformat", "jackson-dataformat-yaml")
-    }
-}
-
 tasks.runIde {
     systemProperty("aws.toolkit.developerMode", true)
     systemProperty("ide.plugins.snapshot.on.unload.fail", true)