diff --git a/Cargo.lock b/Cargo.lock
index cee1a9f34..abae65ecd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -46,9 +46,9 @@ checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
 [[package]]
 name = "ammonia"
-version = "4.1.0"
+version = "4.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ada2ee439075a3e70b6992fce18ac4e407cd05aea9ca3f75d2c0b0c20bbb364"
+checksum = "17e913097e1a2124b46746c980134e8c954bc17a6a59bb3fde96f088d126dde6"
 dependencies = [
  "cssparser",
  "html5ever",
@@ -133,13 +133,14 @@ dependencies = [
  "once_cell",
  "pbkdf2",
  "percent-encoding-iri",
+ "permutation",
  "phf",
  "pin-project",
  "prettyplease",
  "prost",
  "prost-reflect",
  "pulldown-cmark",
- "rand 0.9.2",
+ "rand 0.9.4",
  "rayon",
  "regex",
  "reqwest",
@@ -152,6 +153,7 @@ dependencies = [
  "serde_repr",
  "serde_tuple",
  "sha1",
+ "sha2 0.11.0",
  "snafu",
  "strum 0.27.2",
  "syn 2.0.103",
@@ -577,6 +579,15 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "block-buffer"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdd35008169921d80bc60d3d0ab416eecb028c4cd653352907921d95084790be"
+dependencies = [
+ "hybrid-array",
+]
+
 [[package]]
 name = "build_rust"
 version = "0.1.0"
@@ -677,7 +688,7 @@ dependencies = [
  "log",
  "num-traits",
  "portable-atomic-util",
- "rand 0.9.2",
+ "rand 0.9.4",
  "rmp-serde",
  "serde",
  "serde_json",
@@ -703,7 +714,7 @@ dependencies = [
  "hashbrown 0.15.2",
  "log",
  "num-traits",
- "rand 0.9.2",
+ "rand 0.9.4",
  "serde",
  "spin 0.10.0",
  "text_placeholder",
@@ -733,7 +744,7 @@ dependencies = [
  "csv",
  "derive-new 0.7.0",
  "dirs 6.0.0",
- "rand 0.9.2",
+ "rand 0.9.4",
  "rmp-serde",
  "sanitize-filename 0.6.0",
  "serde",
@@ -788,7 +799,7 @@ dependencies = [
  "num-traits",
  "paste",
  "portable-atomic-util",
- "rand 0.9.2",
+ "rand 0.9.4",
  "seq-macro",
  "spin 0.10.0",
 ]
@@ -836,7 +847,7 @@ dependencies = [
  "half",
  "hashbrown 0.15.2",
  "num-traits",
- "rand 0.9.2",
+ "rand 0.9.4",
  "rand_distr",
  "serde",
  "serde_bytes",
@@ -902,9 +913,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes"
-version = "1.10.1"
+version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
+checksum = "1e748733b7cbc798e1434b6ac524f0c1ff2ab456fe201501e6497c8417a4fc33"
 
 [[package]]
 name = "bytesize"
@@ -933,7 +944,7 @@ dependencies = [
  "memmap2",
  "num-traits",
  "num_cpus",
- "rand 0.9.2",
+ "rand 0.9.4",
  "rand_distr",
  "rayon",
  "safetensors",
@@ -1153,6 +1164,12 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "const-oid"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6ef517f0926dd24a1582492c791b6a4818a4d94e789a334894aa15b0d12f55c"
+
 [[package]]
 name = "constant_time_eq"
 version = "0.3.1"
@@ -1214,6 +1231,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crc32fast"
 version = "1.4.2"
@@ -1273,6 +1299,15 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "crypto-common"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77727bb15fa921304124b128af125e7e3b968275d1b108b379190264f4423710"
+dependencies = [
+ "hybrid-array",
+]
+
 [[package]]
 name = "cssparser"
 version = "0.35.0"
@@ -1351,7 +1386,7 @@ dependencies = [
  "log",
  "num-traits",
  "portable-atomic",
- "rand 0.9.2",
+ "rand 0.9.4",
  "sanitize-filename 0.5.0",
  "serde",
  "serde_json",
@@ -1700,11 +1735,22 @@ version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
- "block-buffer",
- "crypto-common",
+ "block-buffer 0.10.4",
+ "crypto-common 0.1.6",
  "subtle",
 ]
 
+[[package]]
+name = "digest"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1dd6dbb5841937940781866fa1281a1ff7bd3bf827091440879f9994983d5c2"
+dependencies = [
+ "block-buffer 0.12.0",
+ "const-oid",
+ "crypto-common 0.2.1",
+]
+
 [[package]]
 name = "dirs"
 version = "5.0.1"
@@ -2093,16 +2139,16 @@ dependencies = [
 
 [[package]]
 name = "fsrs"
-version = "5.1.0"
+version = "5.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04954cc67c3c11ee342a2ee1f5222bf76d73f7772df08d37dc9a6cdd73c467eb"
+checksum = "cab5f80c16d1d07e492a6828478ecb9f379f142ba6f19fa3b7955edd180ddc2e"
 dependencies = [
  "burn",
  "itertools",
  "log",
  "ndarray",
  "priority-queue",
- "rand 0.9.2",
+ "rand 0.9.4",
  "rayon",
  "serde",
  "snafu",
@@ -2635,7 +2681,7 @@ dependencies = [
  "cfg-if",
  "crunchy",
  "num-traits",
- "rand 0.9.2",
+ "rand 0.9.4",
  "rand_distr",
  "serde",
 ]
@@ -2741,17 +2787,16 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
 dependencies = [
- "digest",
+ "digest 0.10.7",
 ]
 
 [[package]]
 name = "html5ever"
-version = "0.31.0"
+version = "0.35.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "953cbbe631aae7fc0a112702ad5d3aaf09da38beaf45ea84610d6e1c358f569c"
+checksum = "55d958c2f74b664487a2035fe1dadb032c48718a03b63f3ab0b8537db8549ed4"
 dependencies = [
  "log",
- "mac",
  "markup5ever",
  "match_token",
 ]
@@ -2808,6 +2853,15 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
 
+[[package]]
+name = "hybrid-array"
+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9155a582abd142abc056962c29e3ce5ff2ad5469f4246b537ed42c5deba857da"
+dependencies = [
+ "typenum",
+]
+
 [[package]]
 name = "hyper"
 version = "1.6.0"
@@ -3355,9 +3409,9 @@ checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
 
 [[package]]
 name = "markup5ever"
-version = "0.16.2"
+version = "0.35.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e4cd8c02f18a011991a039855480c64d74291c5792fcc160d55d77dc4de4a39"
+checksum = "311fe69c934650f8f19652b3946075f0fc41ad8757dbb68f1ca14e7900ecc1c3"
 dependencies = [
  "log",
  "tendril",
@@ -3366,9 +3420,9 @@ dependencies = [
 
 [[package]]
 name = "match_token"
-version = "0.1.0"
+version = "0.35.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88a9689d8d44bf9964484516275f5cd4c9b59457a6940c1d5d0ecbb94510a36b"
+checksum = "ac84fd3f360fcc43dc5f5d186f02a94192761a080e8bc58621ad4d12296a58cf"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3891,10 +3945,10 @@ version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8ed6a7761f76e3b9f92dfb0a60a6a6477c61024b775147ff0973a02653abaf2"
 dependencies = [
- "digest",
+ "digest 0.10.7",
  "hmac",
  "password-hash",
- "sha2",
+ "sha2 0.10.8",
 ]
 
 [[package]]
@@ -3917,6 +3971,12 @@ name = "percent-encoding-iri"
 version = "2.2.0"
 source = "git+https://github.com/ankitects/rust-url.git?rev=bb930b8d089f4d30d7d19c12e54e66191de47b88#bb930b8d089f4d30d7d19c12e54e66191de47b88"
 
+[[package]]
+name = "permutation"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df202b0b0f5b8e389955afd5f27b007b00fb948162953f1db9c70d2c7e3157d7"
+
 [[package]]
 name = "petgraph"
 version = "0.7.1"
@@ -4249,7 +4309,7 @@ checksum = "b820744eb4dc9b57a3398183639c511b5a26d2ed702cedd3febaa1393caa22cc"
 dependencies = [
  "bytes",
  "getrandom 0.3.2",
- "rand 0.9.2",
+ "rand 0.9.4",
  "ring",
  "rustc-hash 2.1.1",
  "rustls",
@@ -4301,9 +4361,9 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.9.2"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
+checksum = "44c5af06bb1b7d3216d91932aed5265164bf384dc89cd6ba05cf59a35f5f76ea"
 dependencies = [
  "rand_chacha",
  "rand_core 0.9.3",
@@ -4341,7 +4401,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a8615d50dcf34fa31f7ab52692afec947c4dd0ab803cc87cb3b0b4570ff7463"
 dependencies = [
  "num-traits",
- "rand 0.9.2",
+ "rand 0.9.4",
 ]
 
 [[package]]
@@ -5010,8 +5070,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
 dependencies = [
  "cfg-if",
- "cpufeatures",
- "digest",
+ "cpufeatures 0.2.17",
+ "digest 0.10.7",
 ]
 
 [[package]]
@@ -5021,8 +5081,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
 dependencies = [
  "cfg-if",
- "cpufeatures",
- "digest",
+ "cpufeatures 0.2.17",
+ "digest 0.10.7",
+]
+
+[[package]]
+name = "sha2"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "446ba717509524cb3f22f17ecc096f10f4822d76ab5c0b9822c5f9c284e825f4"
+dependencies = [
+ "cfg-if",
+ "cpufeatures 0.3.0",
+ "digest 0.11.3",
 ]
 
 [[package]]
@@ -5825,9 +5896,9 @@ checksum = "bc7d623258602320d5c55d1bc22793b57daff0ec7efc270ea7d55ce1d5f5471c"
 
 [[package]]
 name = "typenum"
-version = "1.18.0"
+version = "1.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1dccffe3ce07af9386bfd29e80c0ab1a8205a2fc34e4bcd40364df902cfa8f3f"
+checksum = "40ce102ab67701b8526c123c1bab5cbe42d7040ccfd0f64af1a385808d2f43de"
 
 [[package]]
 name = "ug"
diff --git a/anki b/anki
index 3890e12c9..7a9ef3239 160000
--- a/anki
+++ b/anki
@@ -1 +1 @@
-Subproject commit 3890e12c9e48c028c3f12aa58cb64bd9f8895e30
+Subproject commit 7a9ef323993c86ed58f8648547f710a2f7b14eca
diff --git a/gradle.properties b/gradle.properties
index aa37d4cf8..93b6ab406 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -19,7 +19,7 @@ android.useAndroidX=true
 android.enableJetifier=false
 
 GROUP=io.github.david-allison
-VERSION_NAME=0.1.64-anki25.09.2
+VERSION_NAME=0.1.65-anki26.05b1
 
 POM_INCEPTION_YEAR=2020
 
diff --git a/rsdroid/src/main/java/net/ankiweb/rsdroid/BackendException.kt b/rsdroid/src/main/java/net/ankiweb/rsdroid/BackendException.kt
index 1ab8ef32b..d14d7bea7 100644
--- a/rsdroid/src/main/java/net/ankiweb/rsdroid/BackendException.kt
+++ b/rsdroid/src/main/java/net/ankiweb/rsdroid/BackendException.kt
@@ -173,6 +173,10 @@ open class BackendException : RuntimeException {
         error: BackendError,
     ) : BackendException(error)
 
+    class BackendInvalidChecksumException(
+        error: BackendError,
+    ) : BackendException(error)
+
     class BackendFatalError(
         error: BackendError,
     ) : BackendException(error)
@@ -206,6 +210,7 @@ open class BackendException : RuntimeException {
                 BackendError.Kind.OS_ERROR -> return BackendOsErrorException(error)
                 BackendError.Kind.SCHEDULER_UPGRADE_REQUIRED -> return BackendSchedulerUpgradeRequiredException(error)
                 BackendError.Kind.INVALID_CERTIFICATE_FORMAT -> return BackendInvalidCertificateFormatException(error)
+                BackendError.Kind.INVALID_CHECKSUM -> return BackendInvalidChecksumException(error)
             }
         }
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 452c65213..7e819fd82 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
 # older versions may fail to compile; newer versions may fail the clippy tests
-channel = "1.89.0"
+channel = "1.92.0"
\ No newline at end of file
diff --git a/set-android-ndk-home.sh b/set-android-ndk-home.sh
index 07b41edde..d3dba3cde 100755
--- a/set-android-ndk-home.sh
+++ b/set-android-ndk-home.sh
@@ -12,6 +12,6 @@ ANDROID_NDK_VERSION=$(toml get gradle/libs.versions.toml versions.ndk --raw)
 export ANDROID_NDK_HOME=$ANDROID_HOME/ndk/$ANDROID_NDK_VERSION
 if ! [ -e "${ANDROID_NDK_HOME}" ]; then
   echo "Android NDK ${ANDROID_NDK_VERSION} needed for Anki-Android-Backend but not installed."
-  echo "Install it with \'${ANDROID_HOME}\cmdline-tools\latest\bin\sdkmanager --install ndk;${ANDROID_NDK_VERSION}\'."
+  echo "Install it with '${ANDROID_HOME}/cmdline-tools/latest/bin/sdkmanager --install \"ndk;${ANDROID_NDK_VERSION}\"'."
   exit 1
 fi
\ No newline at end of file