diff --git a/external_deps.lock.json b/external_deps.lock.json
index f05cc3a..2c07b43 100644
--- a/external_deps.lock.json
+++ b/external_deps.lock.json
@@ -42,7 +42,7 @@
     "com.googlecode.prolog-cafe:prolog-compiler": -348984778,
     "com.googlecode.prolog-cafe:prolog-io": -1081577073,
     "com.googlecode.prolog-cafe:prolog-runtime": 1849117715,
-    "com.h2database:h2": 867138720,
+    "com.h2database:h2": 377222208,
     "com.ibm.icu:icu4j": -802150924,
     "com.icegreen:greenmail": -1151466560,
     "com.jcraft:jsch": 1133842314,
@@ -291,8 +291,8 @@
     "com.googlecode.prolog-cafe:prolog-io:jar:sources": 2063038283,
     "com.googlecode.prolog-cafe:prolog-runtime": -776672418,
     "com.googlecode.prolog-cafe:prolog-runtime:jar:sources": 1445213194,
-    "com.h2database:h2": 1660949213,
-    "com.h2database:h2:jar:sources": 446387355,
+    "com.h2database:h2": -552414482,
+    "com.h2database:h2:jar:sources": 1071831572,
     "com.ibm.icu:icu4j": -1725310050,
     "com.ibm.icu:icu4j:jar:sources": 163265109,
     "com.icegreen:greenmail": 945965666,
@@ -801,10 +801,10 @@
     },
     "com.h2database:h2": {
       "shasums": {
-        "jar": "29b70e427cc1c40cdc376283adbb0cc62853073797bb5fe5761f81fe73d57ce0",
-        "sources": "a853be74b3f6d63438c53d19e2c368f158ee622499422ba586d1f8bc17b843e2"
+        "jar": "82a80a2ac06901b03cdb233c663d21c4f49c884bf6d0cf85022729e8db9ab86f",
+        "sources": "6c2c426f446a2493213f42f628f5ecdf180685659322e5b4f72a92ba18d5f273"
       },
-      "version": "2.4.240"
+      "version": "2.5.250"
     },
     "com.ibm.icu:icu4j": {
       "shasums": {
diff --git a/tools/nongoogle.toml b/tools/nongoogle.toml
index d0514d0..4467d5b 100644
--- a/tools/nongoogle.toml
+++ b/tools/nongoogle.toml
@@ -34,7 +34,7 @@
 guice-assistedinject = { module = "com.google.inject.extensions:guice-assistedinject", version.ref = "guice" }
 guice-library = { module = "com.google.inject:guice", version.ref = "guice", classifier = "classes" }
 guice-servlet = { module = "com.google.inject.extensions:guice-servlet", version.ref = "guice" }
-h2 = { module = "com.h2database:h2", version = "2.4.240" }
+h2 = { module = "com.h2database:h2", version = "2.5.250" }
 hamcrest = { module = "org.hamcrest:hamcrest", version = "3.0" }
 impl-log4j = { module = "org.slf4j:slf4j-reload4j", version.ref = "slf4j" }
 j2objc = { module = "com.google.j2objc:j2objc-annotations", version = "1.1" }