diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 79ecd1fe..00000000
--- a/.gitmodules
+++ /dev/null
@@ -1,12 +0,0 @@
-[submodule "test/pycparser"]
-	path = test/pycparser
-	url = https://github.com/eliben/pycparser.git
-[submodule "3rd/gtest"]
-	path = 3rd/gtest
-	url = https://github.com/google/googletest.git
-[submodule "3rd/gbench"]
-	path = 3rd/gbench
-	url = https://github.com/kriskwiatkowski/benchmark.git
-[submodule "3rd/cpu_features"]
-	path = 3rd/cpu_features
-	url = https://github.com/kriskwiatkowski/cpu_features.git
diff --git a/3rd/cpu_features b/3rd/cpu_features
deleted file mode 160000
index 2b07c2ab..00000000
--- a/3rd/cpu_features
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 2b07c2ab7df71d0b6c19afb93f68a808b412a7ff
diff --git a/3rd/gbench b/3rd/gbench
deleted file mode 160000
index e45fcc64..00000000
--- a/3rd/gbench
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit e45fcc64e02489f718df499a162b41f742a1b7e5
diff --git a/3rd/gtest b/3rd/gtest
deleted file mode 160000
index 1a8ecf18..00000000
--- a/3rd/gtest
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 1a8ecf1813d022cc7914e04564b92decff6161fc
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60ec28f7..db254aaf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,36 @@
 cmake_minimum_required(VERSION 3.13)
 project(cryptocore VERSION 0.0.1 LANGUAGES C)
+include(FetchContent)
 
 enable_language(C)
 enable_language(CXX)
 enable_language(ASM)
 
+# Dependencies
+FetchContent_Declare(
+  gtest
+  SOURCE_DIR     ${PROJECT_SOURCE_DIR}/3rd/gtest
+  GIT_REPOSITORY https://github.com/google/googletest.git
+  GIT_TAG        a3460d1aeeaa43fdf137a6adefef10ba0b59fe4b
+)
+FetchContent_Populate(gtest)
+
+FetchContent_Declare(
+  cpu_features
+  SOURCE_DIR     ${PROJECT_SOURCE_DIR}/3rd/cpu_features
+  GIT_REPOSITORY https://github.com/google/cpu_features.git
+  GIT_TAG        bc2846e78faeb26b8a46c17df369d4e5f1f9e2bb
+)
+FetchContent_Populate(cpu_features)
+
+FetchContent_Declare(
+  gbench
+  SOURCE_DIR     ${PROJECT_SOURCE_DIR}/3rd/gbench
+  GIT_REPOSITORY https://github.com/kriskwiatkowski/benchmark.git
+  GIT_TAG        e45fcc64e02489f718df499a162b41f742a1b7e5
+)
+FetchContent_Populate(gbench)
+
 add_subdirectory(3rd/gtest)
 add_subdirectory(3rd/cpu_features)
 
diff --git a/buid.dbg/.drone.yml b/buid.dbg/.drone.yml
deleted file mode 100644
index 41c554ac..00000000
--- a/buid.dbg/.drone.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-kind: pipeline
-type: exec
-name: default
-
-steps:
-- name: build
-  commands:
-  - git submodule init
-  - git submodule update --recursive --remote
-  - mkdir build
-  - cd build
-  - cmake ..
-  - make
-  - ./test