diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fcbc0360..5beee028 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,12 +17,6 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - flavor: debian
-            buildsystem: meson
-            tests: unit
-            omemo: signal
-            script: ./scripts/build-configuration-matrix.sh
-            omemo_env: libsignal
           - flavor: fedora
             buildsystem: meson
             tests: unit
diff --git a/ci/Dockerfile.debian b/ci/Dockerfile.debian
index d17b5eab..38a830bb 100644
--- a/ci/Dockerfile.debian
+++ b/ci/Dockerfile.debian
@@ -20,7 +20,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   libnotify-dev \
   libotr5-dev \
   libreadline-dev \
-  libsignal-protocol-c-dev \
   libomemo-c-dev \
   libssl-dev \
   libtool \