diff --git a/Dockerfile b/Dockerfile
index 6a26403..a97313e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,10 +5,12 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
 
 WORKDIR /app
 
-# Install libolm C library and build dependencies for E2E crypto bindings
+# Install libolm C library, CMake, C++ compiler, and Python headers for E2E crypto bindings
 RUN apt-get update && apt-get install -y --no-install-recommends \
     libolm-dev \
     gcc \
+    g++ \
+    cmake \
     python3-dev \
     && rm -rf /var/lib/apt/lists/*
 
diff --git a/requirements.txt b/requirements.txt
index cc5a52b..5aca51e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
-mautrix[e2e]>=0.20.0
+mautrix[encryption]>=0.20.0
+python-olm>=3.2.0
 aiosqlite>=0.19.0
 python-keycloak>=4.0.0
 markdown