Upgrade Linux CI to Ubuntu 22.04

Fixed: 732
Change-Id: Ibdd7e18939ec8bd0db0f1cd547fe990ad27794e4
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/68608
Reviewed-by: Ben Pastene <bpastene@google.com>
Reviewed-by: Bob Beck <bbe@google.com>
diff --git a/generated/cr-buildbucket.cfg b/generated/cr-buildbucket.cfg
index 3b058d2..88b755f 100644
--- a/generated/cr-buildbucket.cfg
+++ b/generated/cr-buildbucket.cfg
@@ -322,7 +322,7 @@
       name: "android_riscv64_compile_only"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -366,7 +366,7 @@
       name: "docs"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -442,7 +442,7 @@
       name: "linux"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -479,7 +479,7 @@
       name: "linux32"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -520,7 +520,7 @@
       name: "linux32_nosse2_noasm"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -562,7 +562,7 @@
       name: "linux32_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -603,7 +603,7 @@
       name: "linux32_sde"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -646,7 +646,7 @@
       name: "linux_clang_cfi"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -683,7 +683,7 @@
       name: "linux_clang_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -720,7 +720,7 @@
       name: "linux_clang_rel_msan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -762,7 +762,7 @@
       name: "linux_clang_rel_tsan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -805,7 +805,7 @@
       name: "linux_clang_ubsan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -843,7 +843,7 @@
       name: "linux_fips"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -879,7 +879,7 @@
       name: "linux_fips_clang"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -916,7 +916,7 @@
       name: "linux_fips_clang_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -954,7 +954,7 @@
       name: "linux_fips_noasm_asan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -993,7 +993,7 @@
       name: "linux_fips_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1030,7 +1030,7 @@
       name: "linux_fuzz"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1071,7 +1071,7 @@
       name: "linux_noasm_asan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1109,7 +1109,7 @@
       name: "linux_nosse2_noasm"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1146,7 +1146,7 @@
       name: "linux_nothreads"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1183,7 +1183,7 @@
       name: "linux_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1219,7 +1219,7 @@
       name: "linux_sde"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1257,7 +1257,7 @@
       name: "linux_shared"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -1294,7 +1294,7 @@
       name: "linux_small"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.ci"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2122,7 +2122,7 @@
       name: "android_aarch64_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2179,7 +2179,7 @@
       name: "android_aarch64_fips_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2237,7 +2237,7 @@
       name: "android_aarch64_fips_static_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2294,7 +2294,7 @@
       name: "android_aarch64_rel_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2380,7 +2380,7 @@
       name: "android_arm_armmode_rel_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2412,7 +2412,7 @@
       name: "android_arm_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2470,7 +2470,7 @@
       name: "android_arm_fips_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2529,7 +2529,7 @@
       name: "android_arm_rel_compile"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2560,7 +2560,7 @@
       name: "android_riscv64_compile_only"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2593,7 +2593,7 @@
       name: "docs"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2647,7 +2647,7 @@
       name: "linux"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2673,7 +2673,7 @@
       name: "linux32"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2703,7 +2703,7 @@
       name: "linux32_nosse2_noasm"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2734,7 +2734,7 @@
       name: "linux32_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2764,7 +2764,7 @@
       name: "linux32_sde"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2796,7 +2796,7 @@
       name: "linux_clang_cfi"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2822,7 +2822,7 @@
       name: "linux_clang_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2848,7 +2848,7 @@
       name: "linux_clang_rel_msan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2879,7 +2879,7 @@
       name: "linux_clang_rel_tsan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2911,7 +2911,7 @@
       name: "linux_clang_ubsan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2938,7 +2938,7 @@
       name: "linux_fips"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2963,7 +2963,7 @@
       name: "linux_fips_clang"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -2989,7 +2989,7 @@
       name: "linux_fips_clang_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3016,7 +3016,7 @@
       name: "linux_fips_noasm_asan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3044,7 +3044,7 @@
       name: "linux_fips_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3070,7 +3070,7 @@
       name: "linux_fuzz"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3100,7 +3100,7 @@
       name: "linux_noasm_asan"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3127,7 +3127,7 @@
       name: "linux_nosse2_noasm"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3153,7 +3153,7 @@
       name: "linux_nothreads"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3179,7 +3179,7 @@
       name: "linux_rel"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3204,7 +3204,7 @@
       name: "linux_sde"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3231,7 +3231,7 @@
       name: "linux_shared"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
@@ -3257,7 +3257,7 @@
       name: "linux_small"
       swarming_host: "chromium-swarm.appspot.com"
       dimensions: "cpu:x86-64"
-      dimensions: "os:Ubuntu-18.04"
+      dimensions: "os:Ubuntu-22.04"
       dimensions: "pool:luci.flex.try"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
diff --git a/main.star b/main.star
index fe1f65c..1447f91 100755
--- a/main.star
+++ b/main.star
@@ -236,7 +236,7 @@
 
 LINUX_HOST = {
     "dimensions": {
-        "os": "Ubuntu-18.04",
+        "os": "Ubuntu-22.04",
         "cpu": "x86-64",
     },
 }