diff --git a/Sources/NIOSSH/Connection State Machine/Operations/AcceptsUserAuthMessages.swift b/Sources/NIOSSH/Connection State Machine/Operations/AcceptsUserAuthMessages.swift
index 4e68bcc..13746f3 100644
--- a/Sources/NIOSSH/Connection State Machine/Operations/AcceptsUserAuthMessages.swift	
+++ b/Sources/NIOSSH/Connection State Machine/Operations/AcceptsUserAuthMessages.swift	
@@ -12,6 +12,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+import NIOCore
+
 protocol AcceptsUserAuthMessages {
     var userAuthStateMachine: UserAuthenticationStateMachine { get set }
 
diff --git a/Sources/NIOSSH/Key Exchange/EllipticCurveKeyExchange.swift b/Sources/NIOSSH/Key Exchange/EllipticCurveKeyExchange.swift
index 642a097..3d0d02b 100644
--- a/Sources/NIOSSH/Key Exchange/EllipticCurveKeyExchange.swift	
+++ b/Sources/NIOSSH/Key Exchange/EllipticCurveKeyExchange.swift	
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 import Crypto
+import Foundation
 import NIOCore
 import NIOFoundationCompat
 
diff --git a/Sources/NIOSSH/Keys And Signatures/NIOSSHCertifiedPublicKey.swift b/Sources/NIOSSH/Keys And Signatures/NIOSSHCertifiedPublicKey.swift
index e725ff7..d464c8c 100644
--- a/Sources/NIOSSH/Keys And Signatures/NIOSSHCertifiedPublicKey.swift	
+++ b/Sources/NIOSSH/Keys And Signatures/NIOSSHCertifiedPublicKey.swift	
@@ -14,6 +14,8 @@
 
 import Crypto
 import Dispatch
+import Foundation
+import CDispatch
 import NIOCore
 
 #if canImport(Darwin)
diff --git a/Sources/NIOSSH/Keys And Signatures/NIOSSHPrivateKey.swift b/Sources/NIOSSH/Keys And Signatures/NIOSSHPrivateKey.swift
index 6618d27..8df90c8 100644
--- a/Sources/NIOSSH/Keys And Signatures/NIOSSHPrivateKey.swift	
+++ b/Sources/NIOSSH/Keys And Signatures/NIOSSHPrivateKey.swift	
@@ -14,6 +14,7 @@
 
 @preconcurrency import Crypto
 import NIOCore
+import Foundation
 
 /// An SSH private key.
 ///
diff --git a/Sources/NIOSSH/Keys And Signatures/NIOSSHPublicKey.swift b/Sources/NIOSSH/Keys And Signatures/NIOSSHPublicKey.swift
index 9261b89..20fa63e 100644
--- a/Sources/NIOSSH/Keys And Signatures/NIOSSHPublicKey.swift	
+++ b/Sources/NIOSSH/Keys And Signatures/NIOSSHPublicKey.swift	
@@ -15,6 +15,7 @@
 @preconcurrency import Crypto
 import Foundation
 import NIOCore
+import NIOFoundationCompat
 
 /// An SSH public key.
 ///