diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 685f208..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,17 +0,0 @@
----
-version: 2
-jobs:
-  build_and_test:
-    docker:
-      - image: rikorose/gcc-cmake:gcc-8
-    steps:
-      - checkout
-      - run: cmake -DCMAKE_BUILD_TYPE=Debug -G "CodeBlocks - Unix Makefiles" .
-      - run: cmake --build . --target Containers -- -j 2
-      - run: ./Containers
-      - run: bash <(curl -s https://codecov.io/bash)
-workflows:
-  version: 2
-  build_and_test:
-    jobs:
-      - build_and_test
diff --git a/.codecov.yml b/.codecov.yml
index cbaa513..99342ba 100644
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -1,3 +1,2 @@
----
 ignore:
   - "tst"
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..ff68483
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,28 @@
+name: build
+on: [push]
+jobs:
+  debug:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: make test_debug
+    - run: ./ContainersTestDebug
+  optimized:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: make test_optimized
+    - run: ./ContainersTestOptimized
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: make test_coverage
+    - run: ./ContainersTestCoverage
+    - run: bash <(curl -s https://codecov.io/bash)
+  valgrind:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: sudo apt install -y valgrind
+    - run: make valgrind
diff --git a/CMakeLists.txt b/CMakeLists.txt
deleted file mode 100644
index 051713a..0000000
--- a/CMakeLists.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-cmake_minimum_required(VERSION 3.5.1)
-project(Containers C)
-
-set(CMAKE_C_STANDARD 90)
-
-set(CMAKE_C_FLAGS "-Wall -Wextra -Wpedantic -ldl -g -O0 -fprofile-arcs -ftest-coverage")
-
-add_executable(Containers tst/test.c tst/test.h
-        src/array.c src/include/array.h tst/array.c
-        src/vector.c src/include/vector.h tst/vector.c
-        src/deque.c src/include/deque.h tst/deque.c
-        src/forward_list.c src/include/forward_list.h tst/forward_list.c
-        src/list.c src/include/list.h tst/list.c
-        src/set.c src/include/set.h tst/set.c
-        src/map.c src/include/map.h tst/map.c
-        src/multiset.c src/include/multiset.h tst/multiset.c
-        src/multimap.c src/include/multimap.h tst/multimap.c
-        src/unordered_set.c src/include/unordered_set.h tst/unordered_set.c
-        src/unordered_map.c src/include/unordered_map.h tst/unordered_map.c
-        src/unordered_multiset.c src/include/unordered_multiset.h tst/unordered_multiset.c
-        src/unordered_multimap.c src/include/unordered_multimap.h tst/unordered_multimap.c
-        src/stack.c src/include/stack.h tst/stack.c
-        src/queue.c src/include/queue.h tst/queue.c
-        src/priority_queue.c src/include/priority_queue.h tst/priority_queue.c)
diff --git a/Makefile b/Makefile
index 7961c70..bcb032a 100644
--- a/Makefile
+++ b/Makefile
@@ -23,13 +23,16 @@ header:
 	python3 compile_headers.py $(version)
 
 test_debug:
-	@clang src/*.c tst/*.c -Wall -Wextra -Wpedantic -Werror -O0 -o ContainersTestDebug
+	@gcc src/*.c tst/*.c -Wall -Wextra -Wpedantic -Werror -std=c89 -O0 -ldl -o ContainersTestDebug
 
 test_optimized:
-	@clang src/*.c tst/*.c -Wall -Wextra -Wpedantic -Werror -O3 -o ContainersTestOptimized
+	@gcc src/*.c tst/*.c -Wall -Wextra -Wpedantic -Werror -std=c89 -O3 -ldl -o ContainersTestOptimized
 
 test_coverage:
-	@clang src/*.c tst/*.c -Wall -Wextra -Wpedantic -ldl -g -O0 -fprofile-arcs -ftest-coverage -o ContainersTestCoverage
+	@gcc src/*.c tst/*.c -Wall -Wextra -Wpedantic -Werror -std=c89 -O0 -ldl -g -coverage -o ContainersTestCoverage
 
 valgrind:
-	@valgrind --leak-check=yes ./ContainersTestDebug
+	@sed -i 's/STUB_MALLOC 1/STUB_MALLOC 0/g' tst/test.h
+	@gcc src/*.c tst/*.c -Wall -Wextra -Wpedantic -Werror -std=c89 -O0 -o ContainersTestValgrind
+	@sed -i 's/STUB_MALLOC 0/STUB_MALLOC 1/g' tst/test.h
+	@valgrind --leak-check=full ./ContainersTestValgrind
diff --git a/README.md b/README.md
index 9029bc4..e24ef8d 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
-[![CircleCI](https://circleci.com/gh/bkthomps/Containers/tree/master.svg?style=shield)](https://circleci.com/gh/bkthomps/Containers/tree/master)
+[![GitHubBuild](https://github.com/bkthomps/Containers/workflows/build/badge.svg)](https://github.com/bkthomps/Containers)
 [![Documentation](https://codedocs.xyz/bkthomps/Containers.svg)](https://codedocs.xyz/bkthomps/Containers/)
 [![Codecov](https://codecov.io/gh/bkthomps/Containers/branch/master/graph/badge.svg)](https://codecov.io/gh/bkthomps/Containers)
-[![CodeQuality](https://www.code-inspector.com/project/12167/score/svg?dummy=unused)](https://frontend.code-inspector.com/project/12167/dashboard)
 [![Language](https://img.shields.io/badge/language-C89+-orange.svg)](https://en.wikipedia.org/wiki/C_(programming_language))
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/bkthomps/Containers/blob/master/LICENSE)
 
diff --git a/tst/array.c b/tst/test_array.c
similarity index 100%
rename from tst/array.c
rename to tst/test_array.c
diff --git a/tst/deque.c b/tst/test_deque.c
similarity index 100%
rename from tst/deque.c
rename to tst/test_deque.c
diff --git a/tst/forward_list.c b/tst/test_forward_list.c
similarity index 100%
rename from tst/forward_list.c
rename to tst/test_forward_list.c
diff --git a/tst/list.c b/tst/test_list.c
similarity index 100%
rename from tst/list.c
rename to tst/test_list.c
diff --git a/tst/map.c b/tst/test_map.c
similarity index 100%
rename from tst/map.c
rename to tst/test_map.c
diff --git a/tst/multimap.c b/tst/test_multimap.c
similarity index 100%
rename from tst/multimap.c
rename to tst/test_multimap.c
diff --git a/tst/multiset.c b/tst/test_multiset.c
similarity index 100%
rename from tst/multiset.c
rename to tst/test_multiset.c
diff --git a/tst/priority_queue.c b/tst/test_priority_queue.c
similarity index 100%
rename from tst/priority_queue.c
rename to tst/test_priority_queue.c
diff --git a/tst/queue.c b/tst/test_queue.c
similarity index 100%
rename from tst/queue.c
rename to tst/test_queue.c
diff --git a/tst/set.c b/tst/test_set.c
similarity index 100%
rename from tst/set.c
rename to tst/test_set.c
diff --git a/tst/stack.c b/tst/test_stack.c
similarity index 100%
rename from tst/stack.c
rename to tst/test_stack.c
diff --git a/tst/unordered_map.c b/tst/test_unordered_map.c
similarity index 100%
rename from tst/unordered_map.c
rename to tst/test_unordered_map.c
diff --git a/tst/unordered_multimap.c b/tst/test_unordered_multimap.c
similarity index 100%
rename from tst/unordered_multimap.c
rename to tst/test_unordered_multimap.c
diff --git a/tst/unordered_multiset.c b/tst/test_unordered_multiset.c
similarity index 100%
rename from tst/unordered_multiset.c
rename to tst/test_unordered_multiset.c
diff --git a/tst/unordered_set.c b/tst/test_unordered_set.c
similarity index 100%
rename from tst/unordered_set.c
rename to tst/test_unordered_set.c
diff --git a/tst/vector.c b/tst/test_vector.c
similarity index 100%
rename from tst/vector.c
rename to tst/test_vector.c