diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index bf14635..b864468 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -21,11 +21,9 @@ build:container:
   image: ubuntu:22.04
   before_script:
     - apt-get update -qq
-    - apt-get install -y wget
-    - wget -O- http://neuro.debian.net/lists/jammy.us-ca.full | tee /etc/apt/sources.list.d/neurodebian.sources.list
-    - apt-key adv --recv-keys --keyserver hkps://keyserver.ubuntu.com 0xA5D32F012649A5A9
-    - apt-get update -qq
-    - apt-get install -y apptainer
+    - apt-get install -y wget curl gpg
+    - wget -O /tmp/apptainer.deb https://github.com/apptainer/apptainer/releases/download/v1.2.5/apptainer_1.2.5_amd64.deb
+    - apt-get install -y /tmp/apptainer.deb
     - mkdir -p $APPTAINER_CACHE_DIR
   script:
     - echo "Building Apptainer container..."
@@ -45,11 +43,9 @@ test:pytest:
     - build:container
   before_script:
     - apt-get update -qq
-    - apt-get install -y wget
-    - wget -O- http://neuro.debian.net/lists/jammy.us-ca.full | tee /etc/apt/sources.list.d/neurodebian.sources.list
-    - apt-key adv --recv-keys --keyserver hkps://keyserver.ubuntu.com 0xA5D32F012649A5A9
-    - apt-get update -qq
-    - apt-get install -y apptainer
+    - apt-get install -y wget curl gpg
+    - wget -O /tmp/apptainer.deb https://github.com/apptainer/apptainer/releases/download/v1.2.5/apptainer_1.2.5_amd64.deb
+    - apt-get install -y /tmp/apptainer.deb
   script:
     - echo "Running pytest inside container..."
     - apptainer exec $CONTAINER_IMAGE pytest /src/tests/ -v
@@ -64,11 +60,9 @@ test:coverage:
     - build:container
   before_script:
     - apt-get update -qq
-    - apt-get install -y wget
-    - wget -O- http://neuro.debian.net/lists/jammy.us-ca.full | tee /etc/apt/sources.list.d/neurodebian.sources.list
-    - apt-key adv --recv-keys --keyserver hkps://keyserver.ubuntu.com 0xA5D32F012649A5A9
-    - apt-get update -qq
-    - apt-get install -y apptainer
+    - apt-get install -y wget curl gpg
+    - wget -O /tmp/apptainer.deb https://github.com/apptainer/apptainer/releases/download/v1.2.5/apptainer_1.2.5_amd64.deb
+    - apt-get install -y /tmp/apptainer.deb
   script:
     - echo "Running coverage analysis inside container..."
     - apptainer exec $CONTAINER_IMAGE pytest /src/tests/ --cov=/src --cov-report=xml --cov-report=term