diff --git a/build.gradle.kts b/build.gradle.kts
index 44b7ac30..f697b413 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -56,7 +56,7 @@ kotlin {
             dependencies {
                 implementation(kotlin("test-common"))
                 implementation(kotlin("test-annotations-common"))
-                implementation("org.kodein.memory:kodein-memory-files:0.7.0")
+                implementation("org.kodein.memory:klio-files:0.12.0")
                 api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
             }
         }
diff --git a/src/commonTest/kotlin/fr/acinq/bitcoin/BlockTestsCommon.kt b/src/commonTest/kotlin/fr/acinq/bitcoin/BlockTestsCommon.kt
index 5445c876..4a879c9a 100644
--- a/src/commonTest/kotlin/fr/acinq/bitcoin/BlockTestsCommon.kt
+++ b/src/commonTest/kotlin/fr/acinq/bitcoin/BlockTestsCommon.kt
@@ -27,10 +27,10 @@ class BlockTestsCommon {
     private val blockData = run {
         val file = TransactionTestsCommon.resourcesDir().resolve("block1.dat")
         file.openReadableFile().use {
-            val len = it.available
+            val len = it.size
             // workaround for a bug in kotlin memory file where dstOffset cannot be 0 but is still ignored...
             val buffer = ByteArray(len)
-            for (i in buffer.indices) buffer[i] = it.readByte()
+            it.readBytes(buffer, 0, buffer.size)
             buffer
         }
     }
diff --git a/src/commonTest/kotlin/fr/acinq/bitcoin/CryptoTestsCommon.kt b/src/commonTest/kotlin/fr/acinq/bitcoin/CryptoTestsCommon.kt
index 09c3becf..e87915a5 100644
--- a/src/commonTest/kotlin/fr/acinq/bitcoin/CryptoTestsCommon.kt
+++ b/src/commonTest/kotlin/fr/acinq/bitcoin/CryptoTestsCommon.kt
@@ -21,7 +21,7 @@ import fr.acinq.secp256k1.Hex
 import fr.acinq.secp256k1.Secp256k1
 import org.kodein.memory.file.openReadableFile
 import org.kodein.memory.file.resolve
-import org.kodein.memory.io.readLine
+import org.kodein.memory.text.readLine
 import org.kodein.memory.use
 import kotlin.random.Random
 import kotlin.test.*
diff --git a/src/commonTest/kotlin/fr/acinq/bitcoin/TaprootTestsCommon.kt b/src/commonTest/kotlin/fr/acinq/bitcoin/TaprootTestsCommon.kt
index d6a92572..baa4bf40 100644
--- a/src/commonTest/kotlin/fr/acinq/bitcoin/TaprootTestsCommon.kt
+++ b/src/commonTest/kotlin/fr/acinq/bitcoin/TaprootTestsCommon.kt
@@ -369,8 +369,8 @@ class TaprootTestsCommon {
     fun `parse and validate huge transaction`() {
         // this is the tx that broke btcd/lnd
         val file = resourcesDir().resolve("7393096d97bfee8660f4100ffd61874d62f9a65de9fb6acf740c4c386990ef73.bin").openReadableFile()
-        val buffer = ByteArray(file.available)
-        file.readBytes(buffer)
+        val buffer = ByteArray(file.size)
+        file.readBytes(buffer, 0, buffer.size)
         file.close()
         val tx = Transaction.read(buffer)
         assertEquals(1001, tx.txIn[0].witness.stack.size)
@@ -421,8 +421,8 @@ class TaprootTestsCommon {
     @Test
     fun `parse and validate large ordinals transaction`() {
         val file = resourcesDir().resolve("b5a7e05f28d00e4a791759ad7b6bd6799d856693293ceeaad9b0bb93c8851f7f.bin").openReadableFile()
-        val buffer = ByteArray(file.available)
-        file.readBytes(buffer)
+        val buffer = ByteArray(file.size)
+        file.readBytes(buffer,  0, buffer.size)
         file.close()
         val tx = Transaction.read(buffer)
         val parentTx = Transaction.read(