diff --git a/.docker/Dockerfile.alpine b/.docker/Dockerfile.alpine
index d652803b..136c20e6 100644
--- a/.docker/Dockerfile.alpine
+++ b/.docker/Dockerfile.alpine
@@ -73,6 +73,10 @@ RUN bash /usr/local/bin/install-bloaty.sh
 COPY install-static-libs.sh /usr/local/bin/install-static-libs.sh
 RUN bash /usr/local/bin/install-static-libs.sh gcc clang-19 :alpine
 
+# Install the *real* ninja...
+# TODO: move this up if we change anything
+RUN apk add --no-cache ninja-build
+
 # Set up git & user
 RUN git config --global --add safe.directory /workspace
 RUN adduser -G users -s bash -u 1000 -D mhx
diff --git a/.docker/build-linux.sh b/.docker/build-linux.sh
index 7dbd986c..0960e545 100755
--- a/.docker/build-linux.sh
+++ b/.docker/build-linux.sh
@@ -74,7 +74,11 @@ NINJA_LOG_FILE="${NINJA_LOG_DIR}/${BUILD_ARCH},${BUILD_DIST},${BUILD_TYPE}.log"
 
 case "-$BUILD_TYPE-" in
   *-ninja-*)
-    BUILD_TOOL=ninja
+    if [[ "$BUILD_DIST" == "alpine" ]]; then
+      BUILD_TOOL=/usr/lib/ninja-build/bin/ninja
+    else
+      BUILD_TOOL=ninja
+    fi
     CMAKE_TOOL_ARGS="-GNinja"
     mkdir -p "$NINJA_LOG_DIR"
     SAVE_BUILD_LOG="cp -a .ninja_log $NINJA_LOG_FILE"