diff --git a/contracts/LimitFunds.sol b/contracts/LimitFunds.sol
index 8c8e1c19a..5f3200c33 100644
--- a/contracts/LimitFunds.sol
+++ b/contracts/LimitFunds.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 contract LimitFunds {
 
   uint LIMIT = 5000;
diff --git a/contracts/examples/BadArrayUse.sol b/contracts/examples/BadArrayUse.sol
index e534a81e0..d76160dfd 100644
--- a/contracts/examples/BadArrayUse.sol
+++ b/contracts/examples/BadArrayUse.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 import '../PullPayment.sol';
 
 // UNSAFE CODE, DO NOT USE!
diff --git a/contracts/examples/BadFailEarly.sol b/contracts/examples/BadFailEarly.sol
index 809d91166..801ed4754 100644
--- a/contracts/examples/BadFailEarly.sol
+++ b/contracts/examples/BadFailEarly.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 // UNSAFE CODE, DO NOT USE!
 
 contract BadFailEarly {
diff --git a/contracts/examples/BadPushPayments.sol b/contracts/examples/BadPushPayments.sol
index 926200357..c8d6b9d19 100644
--- a/contracts/examples/BadPushPayments.sol
+++ b/contracts/examples/BadPushPayments.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 // UNSAFE CODE, DO NOT USE!
 
 contract BadPushPayments {
diff --git a/contracts/examples/GoodArrayUse.sol b/contracts/examples/GoodArrayUse.sol
index 00e0a58c1..150eb6ba0 100644
--- a/contracts/examples/GoodArrayUse.sol
+++ b/contracts/examples/GoodArrayUse.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 import '../PullPayment.sol';
 
 contract GoodArrayUse is PullPayment {
diff --git a/contracts/examples/GoodFailEarly.sol b/contracts/examples/GoodFailEarly.sol
index 2cc3bb711..1dc1b8d32 100644
--- a/contracts/examples/GoodFailEarly.sol
+++ b/contracts/examples/GoodFailEarly.sol
@@ -1,3 +1,5 @@
+pragma solidity ^0.4.0;
+
 contract GoodFailEarly {
 
   uint constant DEFAULT_SALARY = 50000;
diff --git a/contracts/examples/GoodPullPayments.sol b/contracts/examples/GoodPullPayments.sol
index 2ee3bac37..6a03bbc02 100644
--- a/contracts/examples/GoodPullPayments.sol
+++ b/contracts/examples/GoodPullPayments.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 contract GoodPullPayments {
   address highestBidder;
   uint highestBid;
diff --git a/contracts/examples/ProofOfExistence.sol b/contracts/examples/ProofOfExistence.sol
index e12382e43..95f2412cb 100644
--- a/contracts/examples/ProofOfExistence.sol
+++ b/contracts/examples/ProofOfExistence.sol
@@ -1,3 +1,5 @@
+pragma solidity ^0.4.0;
+
 import "../Rejector.sol";
 
 /*
diff --git a/contracts/examples/PullPaymentBid.sol b/contracts/examples/PullPaymentBid.sol
index 89e538338..5cf4fe578 100644
--- a/contracts/examples/PullPaymentBid.sol
+++ b/contracts/examples/PullPaymentBid.sol
@@ -1,3 +1,5 @@
+pragma solidity ^0.4.0;
+
 import '../PullPayment.sol';
 
 contract PullPaymentBid is PullPayment {
diff --git a/contracts/examples/PullPaymentCapableExample.sol b/contracts/examples/PullPaymentExample.sol
similarity index 90%
rename from contracts/examples/PullPaymentCapableExample.sol
rename to contracts/examples/PullPaymentExample.sol
index 00ddfa0eb..26c333dca 100644
--- a/contracts/examples/PullPaymentCapableExample.sol
+++ b/contracts/examples/PullPaymentExample.sol
@@ -1,3 +1,5 @@
+pragma solidity ^0.4.0;
+
 import '../PullPayment.sol';
 
 // Example class using PullPayment
diff --git a/contracts/examples/StoppableBid.sol b/contracts/examples/StoppableBid.sol
index b8d69d081..364c186f8 100644
--- a/contracts/examples/StoppableBid.sol
+++ b/contracts/examples/StoppableBid.sol
@@ -1,3 +1,5 @@
+pragma solidity ^0.4.0;
+
 import '../PullPayment.sol';
 import '../Stoppable.sol';
 
diff --git a/contracts/test-helpers/PullPaymentMock.sol b/contracts/test-helpers/PullPaymentMock.sol
index ddf5c5f96..7967a1ede 100644
--- a/contracts/test-helpers/PullPaymentMock.sol
+++ b/contracts/test-helpers/PullPaymentMock.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 import '../PullPayment.sol';
 
 // mock class using PullPayment
diff --git a/test/TestOwnable.sol b/test/TestOwnable.sol
index 4c50942ba..1a5433598 100644
--- a/test/TestOwnable.sol
+++ b/test/TestOwnable.sol
@@ -1,3 +1,4 @@
+pragma solidity ^0.4.0;
 import "truffle/Assert.sol";
 import "truffle/DeployedAddresses.sol";
 import "../contracts/Ownable.sol";