diff --git a/contracts/AbstractToken.sol b/contracts/AbstractToken.sol
index 79e407b..16b35bf 100644
--- a/contracts/AbstractToken.sol
+++ b/contracts/AbstractToken.sol
@@ -1,5 +1,3 @@
-pragma solidity ^0.4.8;
-
 /**
  * AbstractToken ECR20-compliant token contract
  * Child should implement initial supply or minting and overwite base
@@ -10,6 +8,8 @@ pragma solidity ^0.4.8;
 
 import "./Token.sol";
 
+pragma solidity ^0.4.11;
+
 // AbstractToken, ECR20 tokens that all belong to the owner for sending around
 contract AbstractToken is Token {
     
diff --git a/contracts/Bank.sol b/contracts/Bank.sol
index e12081d..0eb8459 100644
--- a/contracts/Bank.sol
+++ b/contracts/Bank.sol
@@ -1,5 +1,4 @@
-pragma solidity  ^0.4.9;
-
+pragma solidity  ^0.4.11;
 
 contract Bank {
     
@@ -16,4 +15,4 @@ contract Bank {
         if(!dest.send(amount)) throw;
         Withdrawn(msg.sender, amount);
     }
-}
\ No newline at end of file
+}
diff --git a/contracts/CollaborationBank.sol b/contracts/CollaborationBank.sol
index cad9581..6acf011 100644
--- a/contracts/CollaborationBank.sol
+++ b/contracts/CollaborationBank.sol
@@ -1,5 +1,3 @@
-pragma solidity ^0.4.0;
-
 /**
  * Abstract contract used for recieving donations or profits
  * Withdraw is divided by total tokens each account owns
@@ -13,8 +11,10 @@ pragma solidity ^0.4.0;
  */
 
 import "./Bank.sol";
-import "../management/EpochLocker.sol";
-import "../token/LockerToken.sol";
+import "EpochLocker.sol";
+import "LockerToken.sol";
+
+pragma solidity ^0.4.11;
 
 contract CollaborationBank is Bank, EpochLocker {
     
diff --git a/contracts/EpochLocker.sol b/contracts/EpochLocker.sol
index c98c240..9dd2484 100644
--- a/contracts/EpochLocker.sol
+++ b/contracts/EpochLocker.sol
@@ -1,11 +1,11 @@
-pragma solidity ^0.4.8;
-
 /**
  * Abstract contract that locks and unlock in period of a time.
  * 
  */
 
-import "lib/ethereans/management/Lockable.sol";
+import "Lockable.sol";
+
+pragma solidity ^0.4.11;
 
 contract EpochLocker is Lockable {
 
diff --git a/contracts/Lockable.sol b/contracts/Lockable.sol
index 0edd67e..426bf55 100644
--- a/contracts/Lockable.sol
+++ b/contracts/Lockable.sol
@@ -1,7 +1,7 @@
-pragma solidity ^0.4.8;
-
 import "./Owned.sol";
 
+pragma solidity ^0.4.8;
+
 contract Lockable {
     bool public lock = true;
     event Locked(bool lock);
@@ -11,4 +11,4 @@ contract Lockable {
         lock = _lock;
     }
     
-}
\ No newline at end of file
+}
diff --git a/contracts/LockerToken.sol b/contracts/LockerToken.sol
index ed915ca..ff27710 100644
--- a/contracts/LockerToken.sol
+++ b/contracts/LockerToken.sol
@@ -8,7 +8,7 @@ pragma solidity ^0.4.0;
  */
 
 import "./AbstractToken.sol";
-import "../management/Lockable.sol";
+import "Lockable.sol";
 
 contract LockerToken is AbstractToken, Lockable, Owned {
     Lockable public locker = this;
diff --git a/contracts/Token.sol b/contracts/Token.sol
index bf66e03..a98fd80 100644
--- a/contracts/Token.sol
+++ b/contracts/Token.sol
@@ -11,4 +11,4 @@ contract Token {
   function approve(address spender, uint256 value) returns (bool ok);
   event Transfer(address indexed from, address indexed to, uint256 value);
   event Approval(address indexed owner, address indexed spender, uint256 value);
-}
\ No newline at end of file
+}