diff --git a/.gitmodules b/.gitmodules
index fc4c5f5e0..9e337454e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,3 @@
-[submodule "extern/spongycastle"]
-	path = extern/spongycastle
-	url = https://github.com/open-keychain/spongycastle.git
-	ignore = dirty
 [submodule "extern/openpgp-api-lib"]
 	path = extern/openpgp-api-lib
 	url = https://github.com/open-keychain/openpgp-api.git
diff --git a/extern/spongycastle b/extern/spongycastle
deleted file mode 160000
index 55dafec90..000000000
--- a/extern/spongycastle
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 55dafec904d11db4b2ab3857951f4b239b39c480