diff --git a/WORKSPACE b/WORKSPACE
index 5717c4ecf0..85d2eeaf82 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -4,8 +4,8 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "rules_swiftnav",
-    strip_prefix = "rules_swiftnav-b80ca392ea24a14f8d810380b14495680255903b",
-    url = "https://github.com/swift-nav/rules_swiftnav/archive/b80ca392ea24a14f8d810380b14495680255903b.tar.gz",
+    strip_prefix = "rules_swiftnav-cb2d9c1e679620bbc19aa9d6d6ec4d68870554ac",
+    url = "https://github.com/swift-nav/rules_swiftnav/archive/cb2d9c1e679620bbc19aa9d6d6ec4d68870554ac.tar.gz",
 )
 
 http_archive(
diff --git a/c/BUILD.bazel b/c/BUILD.bazel
index be507582e2..f3e7c41aa0 100644
--- a/c/BUILD.bazel
+++ b/c/BUILD.bazel
@@ -69,13 +69,22 @@ swift_cc_test(
         "test/check_bitfield_macros.c",
         "test/check_suites_legacy.h",
     ] + SBP_LEGACY_C_SOURCES,
+    common_c_opts = True,
+    copts = ["-Wformat=0"],
     includes = [
         "include/libsbp",
     ],
+    nocopts = [
+        "-Wconversion",
+        "-Wpointer-arith",
+        "-Wformat",
+        "-Wformat-security",
+        "-Wformat-y2k",
+    ],
     type = UNIT,
     deps = [
         ":sbp",
-        "@check//:check",
+        "@check",
     ],
 )
 
@@ -90,11 +99,19 @@ swift_cc_test(
         "test/check_bitfield_macros.c",
         "test/check_suites.h",
     ] + SBP_V4_C_SOURCES,
+    common_c_opts = True,
+    copts = ["-Wformat=0"],
     includes = ["include/libsbp"],
+    nocopts = [
+        "-Wpointer-arith",
+        "-Wformat",
+        "-Wformat-security",
+        "-Wformat-y2k",
+    ],
     type = UNIT,
     deps = [
         ":sbp",
-        "@check//:check",
+        "@check",
     ],
 )
 
@@ -103,6 +120,7 @@ SBP_CPP_V4_C_SOURCES = glob(["test/cpp/auto*.cc"])
 swift_cc_test(
     name = "sbp-cpp-v4-test",
     srcs = SBP_CPP_V4_C_SOURCES,
+    common_c_opts = True,
     type = UNIT,
     deps = [
         ":sbp",
@@ -118,6 +136,7 @@ swift_cc_test(
         "test/string/test_null_terminated.cc",
         "test/string/test_unterminated.cc",
     ],
+    common_c_opts = True,
     includes = [
         "src/include",
     ],
@@ -135,9 +154,18 @@ swift_cc_test(
     srcs = [
         "test/legacy/cpp/test_sbp_stdio.cc",
     ] + SBP_CPP_LEGACY_SOURCES,
+    common_c_opts = True,
+    copts = ["-Wformat=0"],
     data = [
         "test/legacy/cpp/sbp_data/gnss_data.sbp",
     ],
+    nocopts = [
+        "-Wconversion",
+        "-Wpointer-arith",
+        "-Wformat",
+        "-Wformat-security",
+        "-Wformat-y2k",
+    ],
     type = UNIT,
     deps = [
         ":sbp",