diff --git a/scripts/docker/buildpack-deps/Dockerfile.emscripten b/scripts/docker/buildpack-deps/Dockerfile.emscripten
index ba36541e5..551cab495 100644
--- a/scripts/docker/buildpack-deps/Dockerfile.emscripten
+++ b/scripts/docker/buildpack-deps/Dockerfile.emscripten
@@ -33,7 +33,7 @@
 # Using $(em-config CACHE)/sysroot/usr seems to work, though, and still has cmake find the
 # dependencies automatically.
 FROM emscripten/emsdk:3.1.19 AS base
-LABEL version="13"
+LABEL version="14"
 
 ADD emscripten.jam /usr/src
 RUN set -ex && \
@@ -42,7 +42,7 @@ RUN set -ex && \
 	apt-get install lz4 --no-install-recommends && \
 	\
 	cd /usr/src && \
-	git clone https://github.com/Z3Prover/z3.git -b z3-4.11.0 --depth 1 && \
+	git clone https://github.com/Z3Prover/z3.git -b z3-4.11.2 --depth 1 && \
 	cd z3 && \
 	mkdir build && \
 	cd build && \
diff --git a/scripts/docker/buildpack-deps/Dockerfile.ubuntu1604.clang.ossfuzz b/scripts/docker/buildpack-deps/Dockerfile.ubuntu1604.clang.ossfuzz
index 2605240b1..0225f4b2d 100644
--- a/scripts/docker/buildpack-deps/Dockerfile.ubuntu1604.clang.ossfuzz
+++ b/scripts/docker/buildpack-deps/Dockerfile.ubuntu1604.clang.ossfuzz
@@ -22,7 +22,7 @@
 # (c) 2016-2021 solidity contributors.
 #------------------------------------------------------------------------------
 FROM gcr.io/oss-fuzz-base/base-clang:latest as base
-LABEL version="20"
+LABEL version="21"
 
 ARG DEBIAN_FRONTEND=noninteractive
 
@@ -61,7 +61,7 @@ RUN set -ex; \
 
 # Z3
 RUN set -ex; \
-    git clone --depth 1 -b z3-4.11.0 https://github.com/Z3Prover/z3.git \
+    git clone --depth 1 -b z3-4.11.2 https://github.com/Z3Prover/z3.git \
     /usr/src/z3; \
     cd /usr/src/z3; \
     mkdir build; \
diff --git a/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004 b/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004
index b6febf7e6..242f859e7 100644
--- a/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004
+++ b/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004
@@ -22,7 +22,7 @@
 # (c) 2016-2019 solidity contributors.
 #------------------------------------------------------------------------------
 FROM buildpack-deps:focal AS base
-LABEL version="15"
+LABEL version="16"
 
 ARG DEBIAN_FRONTEND=noninteractive
 
diff --git a/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004.clang b/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004.clang
index 85933e86c..7b2ae7515 100644
--- a/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004.clang
+++ b/scripts/docker/buildpack-deps/Dockerfile.ubuntu2004.clang
@@ -22,7 +22,7 @@
 # (c) 2016-2019 solidity contributors.
 #------------------------------------------------------------------------------
 FROM buildpack-deps:focal AS base
-LABEL version="15"
+LABEL version="16"
 
 ARG DEBIAN_FRONTEND=noninteractive