diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 27d3acf..a14bedf 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -122,7 +122,8 @@ cargo-test-debian-bookworm:
     - apt install -y -qq --no-install-recommends git rustc cargo clang make pkg-config nettle-dev libssl-dev capnproto ca-certificates libpcsclite-dev
     - apt clean
     - *report-rust
-    - cargo update -p lalrpop --precise 0.19.12 # hack to work with Rust 1.63
+    - cargo update
+    - cargo update -p lalrpop@0.20.0 --precise 0.19.12 # hack to work with Rust 1.63
     - cargo update -p petgraph --precise 0.6.3 # hack to work with Rust 1.63
   script:
     # there is no virtual card in this image, so subplot does not generate tests
@@ -204,7 +205,8 @@ run_cardtest_ykneo:
   before_script:
     - export PATH="$HOME/.cargo/bin:$PATH"
     - *report-rust
-    - cargo update -p lalrpop --precise 0.19.12 # hack to work with Rust 1.63
+    - cargo update
+    - cargo update -p lalrpop@0.20.0 --precise 0.19.12 # hack to work with Rust 1.63
     - cargo update -p petgraph --precise 0.6.3 # hack to work with Rust 1.63
   script:
     - sh /start.sh
@@ -227,7 +229,8 @@ run_cardtest_fluffypgp:
   before_script:
     - export PATH="$HOME/.cargo/bin:$PATH"
     - *report-rust
-    - cargo update -p lalrpop --precise 0.19.12 # hack to work with Rust 1.63
+    - cargo update
+    - cargo update -p lalrpop@0.20.0 --precise 0.19.12 # hack to work with Rust 1.63
     - cargo update -p petgraph --precise 0.6.3 # hack to work with Rust 1.63
   script:
     - sh /start.sh