diff --git a/.travis.yml b/.travis.yml
index d18aa5a..4a125b4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,4 +6,4 @@ install:
 
 script:
   - pylint --version
-  - pylint problems
+  - pylint src/
diff --git a/problems/common/__init__.py b/src/common/__init__.py
similarity index 100%
rename from problems/common/__init__.py
rename to src/common/__init__.py
diff --git a/problems/common/primes.py b/src/common/primes.py
similarity index 100%
rename from problems/common/primes.py
rename to src/common/primes.py
diff --git a/problems/p1_multiples_of_3_and_5.py b/src/p001_multiples_of_3_and_5.py
similarity index 100%
rename from problems/p1_multiples_of_3_and_5.py
rename to src/p001_multiples_of_3_and_5.py
diff --git a/problems/p2_even_fibonacci_numbers.py b/src/p002_even_fibonacci_numbers.py
similarity index 100%
rename from problems/p2_even_fibonacci_numbers.py
rename to src/p002_even_fibonacci_numbers.py
diff --git a/problems/p3_largest_prime_factor.py b/src/p003_largest_prime_factor.py
similarity index 100%
rename from problems/p3_largest_prime_factor.py
rename to src/p003_largest_prime_factor.py
diff --git a/problems/p4_largest_palindrome_product.py b/src/p004_largest_palindrome_product.py
similarity index 100%
rename from problems/p4_largest_palindrome_product.py
rename to src/p004_largest_palindrome_product.py
diff --git a/problems/p5_smallest_multiple.py b/src/p005_smallest_multiple.py
similarity index 100%
rename from problems/p5_smallest_multiple.py
rename to src/p005_smallest_multiple.py
diff --git a/problems/p6_sum_square_difference.py b/src/p006_sum_square_difference.py
similarity index 100%
rename from problems/p6_sum_square_difference.py
rename to src/p006_sum_square_difference.py
diff --git a/problems/p7_10001st_prime.py b/src/p007_10001st_prime.py
similarity index 100%
rename from problems/p7_10001st_prime.py
rename to src/p007_10001st_prime.py
diff --git a/problems/p8_largest_product_in_a_series.py b/src/p008_largest_product_in_a_series.py
similarity index 100%
rename from problems/p8_largest_product_in_a_series.py
rename to src/p008_largest_product_in_a_series.py
diff --git a/problems/p9_special_pythagorean_triplet.py b/src/p009_special_pythagorean_triplet.py
similarity index 100%
rename from problems/p9_special_pythagorean_triplet.py
rename to src/p009_special_pythagorean_triplet.py
diff --git a/problems/p10_summation_of_primes.py b/src/p010_summation_of_primes.py
similarity index 100%
rename from problems/p10_summation_of_primes.py
rename to src/p010_summation_of_primes.py