diff --git a/SignalServiceKit/src/Contacts/ContactDiscoveryService.m b/SignalServiceKit/src/Contacts/ContactDiscoveryService.m
index c0d8dec35..b20b678a1 100644
--- a/SignalServiceKit/src/Contacts/ContactDiscoveryService.m
+++ b/SignalServiceKit/src/Contacts/ContactDiscoveryService.m
@@ -101,7 +101,7 @@ NSErrorDomain const ContactDiscoveryServiceErrorDomain = @"SignalServiceKit.Cont
     NSData *_Nullable derivedMaterial;
     @try {
         derivedMaterial =
-            [HKDFKit deriveKey:masterSecret info:nil salt:publicKeys outputSize:(int)kAES256_KeyByteLength * 2];
+            [HKDFKit try_deriveKey:masterSecret info:nil salt:publicKeys outputSize:(int)kAES256_KeyByteLength * 2];
     } @catch (NSException *exception) {
         OWSFailDebug(@"could not derive service key: %@", exception);
         return NO;
diff --git a/SignalServiceKit/src/Devices/OWSProvisioningCipher.m b/SignalServiceKit/src/Devices/OWSProvisioningCipher.m
index 8f6746d85..451f84714 100644
--- a/SignalServiceKit/src/Devices/OWSProvisioningCipher.m
+++ b/SignalServiceKit/src/Devices/OWSProvisioningCipher.m
@@ -72,7 +72,7 @@ NS_ASSUME_NONNULL_BEGIN
 
     NSData *infoData = [@"TextSecure Provisioning Message" dataUsingEncoding:NSASCIIStringEncoding];
     NSData *nullSalt = [[NSMutableData dataWithLength:32] copy];
-    NSData *derivedSecret = [HKDFKit deriveKey:sharedSecret info:infoData salt:nullSalt outputSize:64];
+    NSData *derivedSecret = [HKDFKit try_deriveKey:sharedSecret info:infoData salt:nullSalt outputSize:64];
     NSData *cipherKey = [derivedSecret subdataWithRange:NSMakeRange(0, 32)];
     NSData *macKey = [derivedSecret subdataWithRange:NSMakeRange(32, 32)];
     if (cipherKey.length != 32) {