diff --git a/.bazelversion b/.bazelversion
index 56b6be4ebb..6da4de57dc 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-8.3.1
+8.4.1
diff --git a/.github/workflows/bazel.yml b/.github/workflows/bazel.yml
index b9929d415e..1a99e22fbf 100644
--- a/.github/workflows/bazel.yml
+++ b/.github/workflows/bazel.yml
@@ -32,7 +32,7 @@ jobs:
           token: ${{ secrets.BUILDBUDDY_API_KEY }}
 
       - name: bazel ${{ matrix.action }}
-        run: bazel --output_user_root=C:\\bazelroot ${{ matrix.action }} -k ...   --config=ci ${{ matrix.config }} --verbose_failures
+        run: bazel ${{ matrix.action }} -k ...   --config=ci ${{ matrix.config }} --verbose_failures
         shell: bash
 
   build-mac:
diff --git a/epilogue-runtime/BUILD.bazel b/epilogue-runtime/BUILD.bazel
index 71398ae89e..51a7d42076 100644
--- a/epilogue-runtime/BUILD.bazel
+++ b/epilogue-runtime/BUILD.bazel
@@ -11,6 +11,7 @@ wpilib_java_library(
         "//ntcore:ntcore-java",
         "//wpiunits:wpiunits-java",
         "//wpiutil:wpiutil-java",
+        "@maven//:us_hebi_quickbuf_quickbuf_runtime",
     ],
 )
 
@@ -19,6 +20,7 @@ wpilib_java_junit5_test(
     srcs = glob(["src/test/java/**/*.java"]),
     deps = [
         ":epilogue-java",
+        "//wpimath:wpimath-java",
         "//wpiutil:wpiutil-java",
         "@maven//:us_hebi_quickbuf_quickbuf_runtime",
     ],
diff --git a/shared/bazel/compiler_flags/linux_flags.rc b/shared/bazel/compiler_flags/linux_flags.rc
index c424db4bdb..354a93da29 100644
--- a/shared/bazel/compiler_flags/linux_flags.rc
+++ b/shared/bazel/compiler_flags/linux_flags.rc
@@ -4,7 +4,7 @@
 
 # Start with configuring the autodetected toolchain.
 # The target toolchain should be captured already in its toolchain.
-common:linux --repo_env=BAZEL_COPTS="-Wall:-Wextra:-Werror"
+common:linux --repo_env=BAZEL_COPTS="-Wall:-Wextra:-Werror:-gz=zlib"
 
 # C++ only
 common:linux --repo_env=BAZEL_CXXOPTS="-std=c++20:-Wformat=2:-pedantic:-Wno-psabi:-Wno-unused-parameter:-fPIC:-pthread:-Wno-deprecated-enum-enum-conversion"