diff --git a/.github/workflows/r.yml b/.github/workflows/r.yml
index 2ee5ef43efde9..c5d6940560b20 100644
--- a/.github/workflows/r.yml
+++ b/.github/workflows/r.yml
@@ -287,10 +287,7 @@ jobs:
         with:
           msystem: UCRT64
           update: true
-          install: mingw-w64-ucrt-x86_64-cmake
-      - name: Debug CMake
-        shell: bash
-        run: where cmake
+          install: mingw-w64-ucrt-x86_64-cmake mingw-w64-ucrt-x86_64-aws-sdk-cpp
       - uses: r-lib/actions/setup-r@v2
         with:
           # Note: RTools must be 40 here because RTools40 + ucrt is how we build the Arrow C++
diff --git a/ci/scripts/PKGBUILD b/ci/scripts/PKGBUILD
index a1f4d6823a51d..bb706df8754e9 100644
--- a/ci/scripts/PKGBUILD
+++ b/ci/scripts/PKGBUILD
@@ -24,8 +24,7 @@ pkgdesc="Apache Arrow is a cross-language development platform for in-memory dat
 arch=("any")
 url="https://arrow.apache.org/"
 license=("Apache-2.0")
-depends=("${MINGW_PACKAGE_PREFIX}-aws-sdk-cpp"
-         "${MINGW_PACKAGE_PREFIX}-bzip2"
+depends=("${MINGW_PACKAGE_PREFIX}-bzip2"
          "${MINGW_PACKAGE_PREFIX}-curl" # for google-cloud-cpp bundled build
          "${MINGW_PACKAGE_PREFIX}-libutf8proc"
          "${MINGW_PACKAGE_PREFIX}-re2"
@@ -82,7 +81,7 @@ build() {
   # segfaults in tests
 
   MSYS2_ARG_CONV_EXCL="-DCMAKE_INSTALL_PREFIX=" \
-    "C:\Program Files\CMake\bin\cmake.exe" \
+    ${PROGRAMFILES}\CMake\bin\cmake.exe \
     ${ARROW_CPP_DIR} \
     -G "MSYS Makefiles" \
     -DARROW_ACERO=ON \