diff --git a/src/ci/docker/thumb-none/Dockerfile b/src/ci/docker/thumb-none/Dockerfile
index f3ee60c296f..8625aae9a75 100644
--- a/src/ci/docker/thumb-none/Dockerfile
+++ b/src/ci/docker/thumb-none/Dockerfile
@@ -80,25 +80,10 @@ RUN \
   echo "# a" >> /usr/local/mips-linux-musl/bin/mips-openwrt-linux-musl-wrapper.sh && \
   echo "# b" >> /usr/local/mipsel-linux-musl/bin/mipsel-openwrt-linux-musl-wrapper.sh
 
-# ENV TARGETS=asmjs-unknown-emscripten
-# ENV TARGETS=$TARGETS,wasm32-unknown-emscripten
-# ENV TARGETS=$TARGETS,x86_64-rumprun-netbsd
-# ENV TARGETS=$TARGETS,mips-unknown-linux-musl
-# ENV TARGETS=$TARGETS,mipsel-unknown-linux-musl
-# ENV TARGETS=$TARGETS,arm-unknown-linux-musleabi
-# ENV TARGETS=$TARGETS,arm-unknown-linux-musleabihf
-# ENV TARGETS=$TARGETS,armv5te-unknown-linux-gnueabi
-# ENV TARGETS=$TARGETS,armv5te-unknown-linux-musleabi
-# ENV TARGETS=$TARGETS,armv7-unknown-linux-musleabihf
-# ENV TARGETS=$TARGETS,aarch64-unknown-linux-musl
-# ENV TARGETS=$TARGETS,sparc64-unknown-linux-gnu
-# ENV TARGETS=$TARGETS,x86_64-unknown-redox
-# ENV TARGETS=$TARGETS,thumbv6m-none-eabi
-# ENV TARGETS=$TARGETS,thumbv7m-none-eabi
-# ENV TARGETS=$TARGETS,thumbv7em-none-eabi
-# ENV TARGETS=$TARGETS,thumbv7em-none-eabihf
-
+# ENV TARGETS=thumbv6m-none-eabi
 ENV TARGETS=thumbv7m-none-eabi
+ENV TARGETS=$TARGETS,thumbv7em-none-eabi
+ENV TARGETS=$TARGETS,thumbv7em-none-eabihf
 
 # FIXME: remove armv5te vars after https://github.com/alexcrichton/cc-rs/issues/271
 #        get fixed and cc update