diff --git a/projects/aiohttp/Dockerfile b/projects/aiohttp/Dockerfile
index 762b02d22..841c83d61 100644
--- a/projects/aiohttp/Dockerfile
+++ b/projects/aiohttp/Dockerfile
@@ -15,7 +15,14 @@
 ################################################################################
 
 FROM gcr.io/oss-fuzz-base/base-builder-python
-RUN apt-get update && apt-get install -y pkg-config zlib1g zlib1g-dev libjpeg-dev libpng-dev npm
+RUN apt-get update && apt-get install -y \
+  pkg-config \
+  zlib1g \
+  zlib1g-dev \
+  libjpeg-dev \
+  libpng-dev \
+  npm \
+  libffi-dev
 RUN git clone --recurse-submodules https://github.com/aio-libs/aiohttp
 COPY build.sh $SRC/
 COPY fuzz_* $SRC/aiohttp/
diff --git a/projects/httplib2/Dockerfile b/projects/httplib2/Dockerfile
index 55a17f9b8..5adbd82c1 100644
--- a/projects/httplib2/Dockerfile
+++ b/projects/httplib2/Dockerfile
@@ -15,6 +15,7 @@
 ################################################################################
 
 FROM gcr.io/oss-fuzz-base/base-builder-python
+RUN apt-get update && apt-get install -y libffi-dev
 RUN git clone --depth 1 https://github.com/httplib2/httplib2
 
 COPY build.sh $SRC/