diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 919d3fea60..00d83f7d5b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,9 @@ stages:
   - build
 
 clippy:
-  image: paritytech/ci-linux:production
+  # Corresponds to paritytech/ci-linux:production at the time of this PR
+  # https://hub.docker.com/layers/ci-linux/paritytech/ci-linux/production/images/sha256-c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90?context=explore
+  image: paritytech/ci-linux@sha256:c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90
   stage: test
   timeout: 1 hours
   script:
@@ -11,7 +13,9 @@ clippy:
     - cargo +nightly clippy --all-features --all-targets --locked -- -D warnings
 
 fmt:
-  image: paritytech/ci-linux:production
+  # Corresponds to paritytech/ci-linux:production at the time of this PR
+  # https://hub.docker.com/layers/ci-linux/paritytech/ci-linux/production/images/sha256-c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90?context=explore
+  image: paritytech/ci-linux@sha256:c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90
   stage: test
   timeout: 1 hours
   script:
@@ -19,14 +23,18 @@ fmt:
     - cargo +nightly fmt -- --check
 
 test:
-  image: paritytech/ci-linux:production
+  # Corresponds to paritytech/ci-linux:production at the time of this PR
+  # https://hub.docker.com/layers/ci-linux/paritytech/ci-linux/production/images/sha256-c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90?context=explore
+  image: paritytech/ci-linux@sha256:c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90
   stage: test
   timeout: 1 hours
   script:
     - cargo test --all --all-targets --locked
 
 test-features:
-  image: paritytech/ci-linux:production
+  # Corresponds to paritytech/ci-linux:production at the time of this PR
+  # https://hub.docker.com/layers/ci-linux/paritytech/ci-linux/production/images/sha256-c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90?context=explore
+  image: paritytech/ci-linux@sha256:c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90
   stage: test
   timeout: 1 hours
   script:
diff --git a/Dockerfile b/Dockerfile
index a0af29442a..ed2b498108 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,9 @@
 # this container builds the kilt-parachain binary from source files and the runtime library
 # pinned the version to avoid build cache invalidation
 
-# eb1f6a26-20220518 -> rust version rustc 1.62.0-nightly (cb96cc30c0ca 2022-05-05)
-FROM paritytech/ci-linux:eb1f6a26-20220518 as builder
+# Corresponds to paritytech/ci-linux:production at the time of this PR
+# https://hub.docker.com/layers/ci-linux/paritytech/ci-linux/production/images/sha256-c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90?context=explore
+FROM paritytech/ci-linux@sha256:c75cee0971ca54e57a875fac8714eea2db754e621841cde702478783fc28ab90 as builder
 
 WORKDIR /build