diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 95383a375..9f7386a67 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -83,7 +83,7 @@ stages:
   - .fdo.container-build@debian
   stage: container-base
   variables:
-    FDO_DISTRIBUTION_PACKAGES: "build-essential curl python3-setuptools liborc-0.4-dev libglib2.0-dev libxml2-dev libgtk-3-dev libegl1-mesa libgles2-mesa libgl1-mesa-dri libgl1-mesa-glx libwayland-egl1-mesa xz-utils libssl-dev git wget ca-certificates ninja-build python3-pip flex bison libglib2.0-dev lcov"
+    FDO_DISTRIBUTION_PACKAGES: "build-essential curl python3-setuptools liborc-0.4-dev libglib2.0-dev libxml2-dev libgtk-3-dev libegl1-mesa libgles2-mesa libgl1-mesa-dri libgl1-mesa-glx libwayland-egl1-mesa xz-utils libssl-dev git wget ca-certificates ninja-build python3-pip flex bison libglib2.0-dev"
     FDO_DISTRIBUTION_EXEC: 'bash ci/install-gst.sh && pip3 install git+http://gitlab.freedesktop.org/freedesktop/ci-templates'
 
 .build-final-image:
@@ -432,11 +432,10 @@ coverage:
     # generate html report
     - grcov . --binary-path ./target/debug/ -s . -t html --branch --ignore-not-existing --ignore "*target*" --ignore "*/sys/*" --ignore "examples/*" --ignore "tutorials/*" -o ./coverage/
     # generate cobertura report for gitlab integration
-    - grcov . --binary-path ./target/debug/ -s . -t lcov --branch --ignore-not-existing --ignore "*target*" --ignore "*/sys/*" --ignore "examples/*" --ignore "tutorials/*" -o lcov
-    - python3 /usr/local/lib/python3.7/dist-packages/lcov_cobertura.py lcov
-    # output coverage summary for gitlab parsing
-    - lcov -r lcov "/*" 2&> out
-    - grep lines out
+    - grcov . --binary-path ./target/debug/ -s . -t cobertura --branch --ignore-not-existing --ignore "*target*" --ignore "*/sys/*" --ignore "examples/*" --ignore "tutorials/*" -o coverage.xml
+    # output coverage summary for gitlab parsing.
+    # TODO: use grcov once https://github.com/mozilla/grcov/issues/556 is fixed
+    - grep % coverage/index.html | head -1 ; true
   artifacts:
     paths:
       - 'coverage'
diff --git a/ci/images_template.yml b/ci/images_template.yml
index fe96468d4..1d7a5d9ff 100644
--- a/ci/images_template.yml
+++ b/ci/images_template.yml
@@ -1,4 +1,4 @@
 variables:
-  GST_RS_IMG_TAG: '2021-04-23.0'
+  GST_RS_IMG_TAG: '2021-04-23.1'
   GST_RS_STABLE: '1.51.0'
   GST_RS_MSRV: '1.51.0'
diff --git a/ci/install-rust.sh b/ci/install-rust.sh
index 29b1ac370..2d067d6f3 100755
--- a/ci/install-rust.sh
+++ b/ci/install-rust.sh
@@ -31,5 +31,4 @@ fi
 if [ "$RUST_VERSION" = "nightly" ]; then
   cargo install grcov
   rustup component add llvm-tools-preview
-  pip3 install lcov_cobertura
 fi