diff --git a/.gitmodules b/.gitmodules
index 35f803a99c..1d4c6c9da7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,12 @@
 [submodule "wycheproof"]
 	path = wycheproof
 	url = https://github.com/google/wycheproof
+[submodule "tlsfuzzer"]
+	path = tlsfuzzer
+	url = https://github.com/tlsfuzzer/tlsfuzzer
+[submodule "python-ecdsa"]
+	path = python-ecdsa
+	url = https://github.com/tlsfuzzer/python-ecdsa
+[submodule "tlslite-ng"]
+	path = tlslite-ng
+	url = https://github.com/tlsfuzzer/tlslite-ng
diff --git a/python-ecdsa b/python-ecdsa
new file mode 160000
index 0000000000..4de8d5bf89
--- /dev/null
+++ b/python-ecdsa
@@ -0,0 +1 @@
+Subproject commit 4de8d5bf89089d1140eb99aa5d7eb2dc8e6337b6
diff --git a/tlsfuzzer b/tlsfuzzer
new file mode 160000
index 0000000000..dbd56c1490
--- /dev/null
+++ b/tlsfuzzer
@@ -0,0 +1 @@
+Subproject commit dbd56c149072e656ca8d6a43a59588f3e7513da2
diff --git a/tlslite-ng b/tlslite-ng
new file mode 160000
index 0000000000..771e9f59d6
--- /dev/null
+++ b/tlslite-ng
@@ -0,0 +1 @@
+Subproject commit 771e9f59d639dbb0e2fa8e646c8e588405d3903e