diff --git a/.ci_support/linux_64_.yaml b/.ci_support/linux_64_.yaml
index 8bf21eb..f0bde7a 100644
--- a/.ci_support/linux_64_.yaml
+++ b/.ci_support/linux_64_.yaml
@@ -7,11 +7,11 @@ c_compiler_version:
 c_stdlib:
 - sysroot
 c_stdlib_version:
-- '2.12'
+- '2.17'
 cairo:
 - '1'
 cdt_name:
-- cos6
+- cos7
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 5e742a6..678565d 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -207,6 +207,8 @@ outputs:
         - R -e "options(warn=2);Sys.time()"
         # check that tzdata version is at least 2024
         - R -e "stopifnot(strtoi(substr(attr(OlsonNames(), 'Version'), 1, 4)) >= 2024)"
+        - Rscript -e "cat('test', file = bzfile('test.bz2'))"
+        - Rscript -e "quit(status = readChar(gzfile('test.bz2'), 4) != 'test')"
       files:
         - test-svg.R