diff --git a/.github/workflows/binaries.yml b/.github/workflows/binaries.yml
index f759f71dea..c8ed3bcc5a 100644
--- a/.github/workflows/binaries.yml
+++ b/.github/workflows/binaries.yml
@@ -37,7 +37,7 @@ jobs:
           os: windows-2022
           target: x86_64-pc-windows-msvc
     runs-on: ${{ matrix.os }}
-    timeout-minutes: 15 # NOTE (aseipp): keep in-sync with the build.yml timeout limit
+    timeout-minutes: 15 # NOTE (aseipp): should be safe, because tests aren't run
 
     name: Build binary artifacts
     steps:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0fa1bfce23..8ef68b5937 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -62,7 +62,9 @@ jobs:
     # is a problem we should fix. in the mean time, this will make these flakes
     # less harmful, as it won't cause builds to spin for multiple hours, requiring
     # manual cancellation.
-    timeout-minutes: 15
+    #
+    # FIXME (aseipp, 2025-02-06): bumped to 20min.
+    timeout-minutes: 20
 
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
@@ -103,7 +105,7 @@ jobs:
       matrix:
         os: [ubuntu-24.04, ubuntu-24.04-arm, macos-14]
     runs-on: ${{ matrix.os }}
-    timeout-minutes: 15
+    timeout-minutes: 20
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683