diff --git a/.gitmodules b/.gitmodules
index 02c33f98..b5480660 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "libsignal-protocol-c"]
 	path = plugins/signal-protocol/libsignal-protocol-c
 	url = https://github.com/WhisperSystems/libsignal-protocol-c.git
-	branch = v2.3.2
+	branch = v2.3.3
diff --git a/plugins/signal-protocol/CMakeLists.txt b/plugins/signal-protocol/CMakeLists.txt
index 0ae84111..400de03c 100644
--- a/plugins/signal-protocol/CMakeLists.txt
+++ b/plugins/signal-protocol/CMakeLists.txt
@@ -32,7 +32,7 @@ if(NOT BUILD_LIBSIGNAL_IN_TREE)
     # libsignal-protocol-c has a history of breaking compatibility on the patch level
     # we'll have to check compatibility for every new release
     # distro maintainers may update this dependency after compatibility tests
-    find_package(SignalProtocol 2.3.2 EXACT REQUIRED)
+    find_package(SignalProtocol 2.3.2 REQUIRED)
 else()
     add_subdirectory(libsignal-protocol-c EXCLUDE_FROM_ALL)
     set_property(TARGET curve25519 PROPERTY POSITION_INDEPENDENT_CODE ON)
diff --git a/plugins/signal-protocol/libsignal-protocol-c b/plugins/signal-protocol/libsignal-protocol-c
index 4a137eaf..3a83a4f4 160000
--- a/plugins/signal-protocol/libsignal-protocol-c
+++ b/plugins/signal-protocol/libsignal-protocol-c
@@ -1 +1 @@
-Subproject commit 4a137eaf4eb4421949e2e1dde9f11ec7bc07b88f
+Subproject commit 3a83a4f4ed2302ff6e68ab569c88793b50c22d28