diff --git a/waltid-crypto/build.gradle.kts b/waltid-crypto/build.gradle.kts
index 2cb3b4073..5c3a8aaf6 100644
--- a/waltid-crypto/build.gradle.kts
+++ b/waltid-crypto/build.gradle.kts
@@ -123,7 +123,7 @@ kotlin {
                 implementation("org.bouncycastle:bcpkix-lts8on:2.73.6") // PEM import
 
                 // Ktor client
-                implementation("io.ktor:ktor-client-cio:$ktor_version")
+                implementation("io.ktor:ktor-client-okhttp:$ktor_version")
 
                 // Logging
                 implementation("org.slf4j:slf4j-simple:2.0.13")
diff --git a/waltid-issuer-api/build.gradle.kts b/waltid-issuer-api/build.gradle.kts
index e4c1c2a06..8a4c4e666 100644
--- a/waltid-issuer-api/build.gradle.kts
+++ b/waltid-issuer-api/build.gradle.kts
@@ -63,7 +63,7 @@ dependencies {
     implementation("io.ktor:ktor-client-serialization-jvm:${Versions.KTOR_VERSION}")
     implementation("io.ktor:ktor-client-content-negotiation:${Versions.KTOR_VERSION}")
     implementation("io.ktor:ktor-client-json-jvm:${Versions.KTOR_VERSION}")
-    implementation("io.ktor:ktor-client-cio-jvm:${Versions.KTOR_VERSION}")
+    implementation("io.ktor:ktor-client-okhttp-jvm:${Versions.KTOR_VERSION}")
     implementation("io.ktor:ktor-client-logging-jvm:${Versions.KTOR_VERSION}")
 
 
diff --git a/waltid-openid4vc/build.gradle.kts b/waltid-openid4vc/build.gradle.kts
index 16fac573b..08d6ccea8 100644
--- a/waltid-openid4vc/build.gradle.kts
+++ b/waltid-openid4vc/build.gradle.kts
@@ -118,7 +118,7 @@ kotlin {
         }
         val jvmMain by getting {
             dependencies {
-                implementation("io.ktor:ktor-client-cio:$ktor_version")
+                implementation("io.ktor:ktor-client-okhttp:$ktor_version")
             }
         }
         val jvmTest by getting {
diff --git a/waltid-reporting/build.gradle.kts b/waltid-reporting/build.gradle.kts
index b3064d974..3bc4b3bce 100644
--- a/waltid-reporting/build.gradle.kts
+++ b/waltid-reporting/build.gradle.kts
@@ -81,7 +81,7 @@ kotlin {
         val jvmMain by getting {
             dependencies {
                 // Ktor client
-                implementation("io.ktor:ktor-client-cio:$ktor_version")
+                implementation("io.ktor:ktor-client-okhttp:$ktor_version")
 
                 // Logging
                 implementation("org.slf4j:slf4j-simple:2.0.13")
diff --git a/waltid-verifiable-credentials/build.gradle.kts b/waltid-verifiable-credentials/build.gradle.kts
index 7641397bb..92b53a89d 100644
--- a/waltid-verifiable-credentials/build.gradle.kts
+++ b/waltid-verifiable-credentials/build.gradle.kts
@@ -108,7 +108,7 @@ kotlin {
         val jvmMain by getting {
             dependencies {
                 // Ktor client
-                implementation("io.ktor:ktor-client-cio:$ktor_version")
+                implementation("io.ktor:ktor-client-okhttp:$ktor_version")
 
                 // Logging
                 implementation("org.slf4j:slf4j-simple:2.0.13")
diff --git a/waltid-wallet-api/build.gradle.kts b/waltid-wallet-api/build.gradle.kts
index c69524458..cbb3f1566 100644
--- a/waltid-wallet-api/build.gradle.kts
+++ b/waltid-wallet-api/build.gradle.kts
@@ -75,7 +75,7 @@ dependencies {
     implementation("io.ktor:ktor-client-serialization-jvm:$ktor_version")
     implementation("io.ktor:ktor-client-content-negotiation:$ktor_version")
     implementation("io.ktor:ktor-client-json-jvm:$ktor_version")
-    implementation("io.ktor:ktor-client-cio-jvm:$ktor_version")
+    implementation("io.ktor:ktor-client-okhttp-jvm:$ktor_version")
     implementation("io.ktor:ktor-client-logging-jvm:$ktor_version")
 
     /* -- Kotlin -- */