diff --git a/apex/com.android.geotz/Android.bp b/apex/com.android.geotz/Android.bp
index 145988d..f4e9bbc 100644
--- a/apex/com.android.geotz/Android.bp
+++ b/apex/com.android.geotz/Android.bp
@@ -21,9 +21,7 @@
     name: "com.android.geotz-defaults",
     updatable: true,
     generate_hashtree: false,
-    // TODO(b/174024269) Change this to the value for S once the API level is
-    // final.
-    min_sdk_version: "current",
+    min_sdk_version: "31",
 
     // Explicit because the defaulting behavior only works for the real
     // module.
@@ -77,7 +75,7 @@
     static_libs: [
         "offlinelocationtimezoneprovider",
     ],
-    sdk_version: "system_current",
+    sdk_version: "system_31",
     // TODO(b/188773212): force dex compilation for inclusion in bootclasspath_fragment.
     compile_dex: true,
     apex_available: [
diff --git a/common/Android.bp b/common/Android.bp
index dbb149b..c64e06d 100644
--- a/common/Android.bp
+++ b/common/Android.bp
@@ -29,8 +29,8 @@
     host_supported: true,
     srcs: ["src/main/java/**/*.java"],
     libs: ["androidx.annotation_annotation"],
-    sdk_version: "current",
-    min_sdk_version: "current",
+    sdk_version: "31",
+    min_sdk_version: "31",
     apex_available: [
         "com.android.geotz",
     ],
@@ -41,8 +41,8 @@
     name: "GeotzCommonTests",
     srcs: ["src/test/java/**/*.java"],
     manifest: "src/test/AndroidManifest.xml",
-    sdk_version: "current",
-    min_sdk_version: "current",
+    sdk_version: "31",
+    min_sdk_version: "31",
     static_libs: [
         "androidx.test.runner",
         "geotz_lookup",
diff --git a/geotz_lookup/Android.bp b/geotz_lookup/Android.bp
index 4b4c436..9ef4f7d 100644
--- a/geotz_lookup/Android.bp
+++ b/geotz_lookup/Android.bp
@@ -20,8 +20,8 @@
 java_library {
     name: "geotz_lookup",
     srcs: ["src/main/java/**/*.java"],
-    sdk_version: "current",
-    min_sdk_version: "current",
+    sdk_version: "31",
+    min_sdk_version: "31",
     libs: ["androidx.annotation_annotation"],
     static_libs: [
         "geotz_common",
@@ -40,8 +40,8 @@
     name: "GeotzLookupTests",
     srcs: ["src/test/java/**/*.java"],
     manifest: "src/test/AndroidManifest.xml",
-    sdk_version: "current",
-    min_sdk_version: "current",
+    sdk_version: "31",
+    min_sdk_version: "31",
     static_libs: [
         "androidx.test.runner",
         "geotz_lookup",
diff --git a/locationtzprovider/Android.bp b/locationtzprovider/Android.bp
index 63fa3d7..a6c560b 100644
--- a/locationtzprovider/Android.bp
+++ b/locationtzprovider/Android.bp
@@ -21,7 +21,7 @@
 java_library {
     name: "offlinelocationtimezoneprovider",
     srcs: ["src/main/java/**/*.java"],
-    sdk_version: "system_current",
+    sdk_version: "system_31",
     libs: [
         "androidx.annotation_annotation",
     ],
@@ -39,7 +39,7 @@
     name: "OfflineLocationTimeZoneProviderTests",
     srcs: ["src/test/java/**/*.java"],
     manifest: "src/test/AndroidManifest.xml",
-    sdk_version: "system_current",
+    sdk_version: "system_31",
     static_libs: [
         "androidx.test.runner",
         "junit",
diff --git a/s2storage/Android.bp b/s2storage/Android.bp
index f4be5ca..bf5c2c8 100644
--- a/s2storage/Android.bp
+++ b/s2storage/Android.bp
@@ -19,8 +19,8 @@
 
 java_library {
     name: "geotz_s2storage_ro",
-    sdk_version: "current",
-    min_sdk_version: "current",
+    sdk_version: "31",
+    min_sdk_version: "31",
     host_supported: true,
     srcs: [
         "src/readonly/java/**/*.java",