diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e978134..6e885fb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
+          - '1.7'
           - '1' # automatically expands to the latest stable 1.x release of Julia
           - nightly
         os:
@@ -24,10 +24,6 @@ jobs:
           - windows-latest
         arch:
           - x64
-        include:
-          - os: windows-latest
-            version: '1'
-            arch: x86
     steps:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1
diff --git a/.github/workflows/invalidations.yml b/.github/workflows/invalidations.yml
deleted file mode 100644
index af4c158..0000000
--- a/.github/workflows/invalidations.yml
+++ /dev/null
@@ -1,40 +0,0 @@
-name: Invalidations
-
-on:
-  pull_request:
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: always.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  evaluate:
-    # Only run on PRs to the default branch.
-    # In the PR trigger above branches can be specified only explicitly whereas this check should work for master, main, or any other default branch
-    if: github.base_ref == github.event.repository.default_branch
-    runs-on: ubuntu-latest
-    steps:
-    - uses: julia-actions/setup-julia@v1
-      with:
-        version: '1'
-    - uses: actions/checkout@v3
-    - uses: julia-actions/julia-buildpkg@v1
-    - uses: julia-actions/julia-invalidations@v1
-      id: invs_pr
-
-    - uses: actions/checkout@v3
-      with:
-        ref: ${{ github.event.repository.default_branch }}
-    - uses: julia-actions/julia-buildpkg@v1
-    - uses: julia-actions/julia-invalidations@v1
-      id: invs_default
-    
-    - name: Report invalidation counts
-      run: |
-        echo "Invalidations on default branch: ${{ steps.invs_default.outputs.total }} (${{ steps.invs_default.outputs.deps }} via deps)" >> $GITHUB_STEP_SUMMARY
-        echo "This branch: ${{ steps.invs_pr.outputs.total }} (${{ steps.invs_pr.outputs.deps }} via deps)" >> $GITHUB_STEP_SUMMARY
-    - name: Check if the PR does increase number of invalidations
-      if: steps.invs_pr.outputs.total > steps.invs_default.outputs.total
-      run: exit 1
\ No newline at end of file
diff --git a/test/client.jl b/test/client.jl
index 59513c7..107b989 100644
--- a/test/client.jl
+++ b/test/client.jl
@@ -125,11 +125,10 @@
         @test isok(HTTP2.post("https://$httpbin/post"; body=UInt8['h','e','y']))
         io = IOBuffer("hey"); seekstart(io)
         @test isok(HTTP2.post("https://$httpbin/post"; body=io))
-        tmp = tempname()
-        open(f->write(f, "hey"), tmp, "w")
-        io = open(tmp)
-        @test isok(HTTP2.post("https://$httpbin/post"; body=io))
-        close(io); rm(tmp)
+        mktemp() do (path, io)
+            write(io, "hey"); seekstart(io)
+            @test isok(HTTP2.post("https://$httpbin/post"; body=io))
+        end
         f = Base.BufferStream()
         write(f, "hey")
         close(f)