diff --git a/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/ApolloClient.kt b/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/ApolloClient.kt
index 3158e64df7b..4c52421017f 100644
--- a/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/ApolloClient.kt
+++ b/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/ApolloClient.kt
@@ -220,6 +220,11 @@ private constructor(
     concurrencyInfo.coroutineScope.cancel()
     networkTransport.dispose()
     subscriptionNetworkTransport.dispose()
+    for (interceptor in interceptors) {
+      if (interceptor is Closeable) {
+        interceptor.close()
+      }
+    }
   }
 
   private val networkInterceptor = NetworkInterceptor(
diff --git a/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/interceptor/ApolloInterceptor.kt b/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/interceptor/ApolloInterceptor.kt
index fc77d9e3740..65669486bce 100644
--- a/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/interceptor/ApolloInterceptor.kt
+++ b/libraries/apollo-runtime/src/commonMain/kotlin/com/apollographql/apollo/interceptor/ApolloInterceptor.kt
@@ -1,14 +1,18 @@
 package com.apollographql.apollo.interceptor
 
 import com.apollographql.apollo.api.ApolloRequest
-import com.apollographql.apollo.api.Operation
 import com.apollographql.apollo.api.ApolloResponse
+import com.apollographql.apollo.api.Operation
 import kotlinx.coroutines.flow.Flow
 
 interface ApolloInterceptorChain {
   fun <D : Operation.Data> proceed(request: ApolloRequest<D>): Flow<ApolloResponse<D>>
 }
 
+/**
+ * Implementations can optionally implement [okio.Closeable], if they do, their [okio.Closeable.close] function will be called when the
+ * [com.apollographql.apollo.ApolloClient] they are associated to is closed.
+ */
 interface ApolloInterceptor {
   fun <D : Operation.Data> intercept(request: ApolloRequest<D>, chain: ApolloInterceptorChain): Flow<ApolloResponse<D>>
 }