diff --git a/clients/js-legacy/package.json b/clients/js-legacy/package.json
index 631e5cbd..c654160a 100644
--- a/clients/js-legacy/package.json
+++ b/clients/js-legacy/package.json
@@ -60,7 +60,7 @@
         "buffer": "^6.0.3"
     },
     "devDependencies": {
-        "@solana/codecs-strings": "5.0.0",
+        "@solana/codecs-strings": "5.1.0",
         "@solana/prettier-config-solana": "0.0.5",
         "@solana/spl-memo": "0.2.5",
         "@solana/web3.js": "^1.95.5",
diff --git a/clients/js-legacy/pnpm-lock.yaml b/clients/js-legacy/pnpm-lock.yaml
index 3b4c0a9e..cbf4fd4e 100644
--- a/clients/js-legacy/pnpm-lock.yaml
+++ b/clients/js-legacy/pnpm-lock.yaml
@@ -25,8 +25,8 @@ importers:
         version: 6.0.3
     devDependencies:
       '@solana/codecs-strings':
-        specifier: 5.0.0
-        version: 5.0.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)
+        specifier: 5.1.0
+        version: 5.1.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)
       '@solana/prettier-config-solana':
         specifier: 0.0.5
         version: 0.0.5(prettier@3.7.4)
@@ -230,8 +230,8 @@ packages:
     peerDependencies:
       typescript: '>=5.3.3'
 
-  '@solana/codecs-core@5.0.0':
-    resolution: {integrity: sha512-rCG2d8OaamVF2/J//YyCgDqNJpUytVVltw9C8mJtEz5c6Se/LR6BFuG8g4xeJswq/ab4RFk5/HFdgbvNjKgQjA==}
+  '@solana/codecs-core@5.1.0':
+    resolution: {integrity: sha512-vDwi03mxWeWCS5Il6BCdNdifYdOoHVz97YOmbWGIt45b77Ivu5NUYeSD2+ccl6fSw8eYQ6QaqqKXMjbSfsXv4g==}
     engines: {node: '>=20.18.0'}
     peerDependencies:
       typescript: '>=5.3.3'
@@ -252,8 +252,8 @@ packages:
     peerDependencies:
       typescript: '>=5.3.3'
 
-  '@solana/codecs-numbers@5.0.0':
-    resolution: {integrity: sha512-a2+skRLuUK02f/XFe4L0e1+wHCyfK25PkyseFps1v1l4pvevukFwth/EhSyrs6w5CsTJRVoR7MuE3E00PM4egw==}
+  '@solana/codecs-numbers@5.1.0':
+    resolution: {integrity: sha512-Ea5/9yjDNOrDZcI40UGzzi6Aq1JNsmzM4m5pOk6Xb3JRZ0YdKOv/MwuCqb6jRgzZ7SQjHhkfGL43kHLJA++bOw==}
     engines: {node: '>=20.18.0'}
     peerDependencies:
       typescript: '>=5.3.3'
@@ -264,12 +264,15 @@ packages:
       fastestsmallesttextencoderdecoder: ^1.0.22
       typescript: '>=5'
 
-  '@solana/codecs-strings@5.0.0':
-    resolution: {integrity: sha512-ALkRwpV8bGR6qjAYw0YXZwp2YI4wzvKOJGmx04Ut8gMdbaUx7qOcJkhEQKI6ZVC3lAWSIS1N1wGccUZDwvfKxw==}
+  '@solana/codecs-strings@5.1.0':
+    resolution: {integrity: sha512-014xwl5T/3VnGW0gceizF47DUs5EURRtgGmbWIR5+Z32yxgQ6hT9Zl0atZbL268RHbUQ03/J8Ush1StQgy7sfQ==}
     engines: {node: '>=20.18.0'}
     peerDependencies:
       fastestsmallesttextencoderdecoder: ^1.0.22
       typescript: '>=5.3.3'
+    peerDependenciesMeta:
+      fastestsmallesttextencoderdecoder:
+        optional: true
 
   '@solana/codecs@2.0.0-rc.1':
     resolution: {integrity: sha512-qxoR7VybNJixV51L0G1RD2boZTcxmwUWnKCaJJExQ5qNKwbpSyDdWfFJfM5JhGyKe9DnPVOZB+JHWXnpbZBqrQ==}
@@ -289,8 +292,8 @@ packages:
     peerDependencies:
       typescript: '>=5.3.3'
 
-  '@solana/errors@5.0.0':
-    resolution: {integrity: sha512-gTuhzO6E+ydfAAzqmqdPcvFyJwAzFKKIrqtnZPpgAuomcPYu+HSo0tuwSM/cTX0djmHt+GoOsf/julph+nvs2w==}
+  '@solana/errors@5.1.0':
+    resolution: {integrity: sha512-JlTyekErWa6Fdcwu1Hrh+jZxjM4YxyorGCFDRVZlmHZFkp5N00DWKcYnSGZrTF8E6ZZEP9pfS2XwM8y7p7HPww==}
     engines: {node: '>=20.18.0'}
     hasBin: true
     peerDependencies:
@@ -608,10 +611,6 @@ packages:
     resolution: {integrity: sha512-oPYleIY8wmTVzkvQq10AEok6YcTC4sRUBl8F9gVuwchGVUCTbl/vhLTaQqutuuySYOsu8YTgV+OxKc/8Yvx+mQ==}
     engines: {node: '>=18'}
 
-  commander@14.0.1:
-    resolution: {integrity: sha512-2JkV3gUZUVrbNA+1sjBOYLsMZ5cEEl8GTFP2a4AVz5hvasAMCQ1D2l2le/cX+pV4N6ZU17zjUahLpIXRrnWL8A==}
-    engines: {node: '>=20'}
-
   commander@14.0.2:
     resolution: {integrity: sha512-TywoWNNRbhoD0BXs1P3ZEScW8W5iKrnbithIl0YH+uCmBd0QpPOA8yc82DS3BIE5Ma6FnBVUsJ7wVUDz4dvOWQ==}
     engines: {node: '>=20'}
@@ -1779,9 +1778,9 @@ snapshots:
       '@solana/errors': 2.3.0(typescript@5.9.3)
       typescript: 5.9.3
 
-  '@solana/codecs-core@5.0.0(typescript@5.9.3)':
+  '@solana/codecs-core@5.1.0(typescript@5.9.3)':
     dependencies:
-      '@solana/errors': 5.0.0(typescript@5.9.3)
+      '@solana/errors': 5.1.0(typescript@5.9.3)
       typescript: 5.9.3
 
   '@solana/codecs-data-structures@2.0.0-rc.1(typescript@5.9.3)':
@@ -1803,10 +1802,10 @@ snapshots:
       '@solana/errors': 2.3.0(typescript@5.9.3)
       typescript: 5.9.3
 
-  '@solana/codecs-numbers@5.0.0(typescript@5.9.3)':
+  '@solana/codecs-numbers@5.1.0(typescript@5.9.3)':
     dependencies:
-      '@solana/codecs-core': 5.0.0(typescript@5.9.3)
-      '@solana/errors': 5.0.0(typescript@5.9.3)
+      '@solana/codecs-core': 5.1.0(typescript@5.9.3)
+      '@solana/errors': 5.1.0(typescript@5.9.3)
       typescript: 5.9.3
 
   '@solana/codecs-strings@2.0.0-rc.1(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
@@ -1817,13 +1816,14 @@ snapshots:
       fastestsmallesttextencoderdecoder: 1.0.22
       typescript: 5.9.3
 
-  '@solana/codecs-strings@5.0.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
+  '@solana/codecs-strings@5.1.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
     dependencies:
-      '@solana/codecs-core': 5.0.0(typescript@5.9.3)
-      '@solana/codecs-numbers': 5.0.0(typescript@5.9.3)
-      '@solana/errors': 5.0.0(typescript@5.9.3)
-      fastestsmallesttextencoderdecoder: 1.0.22
+      '@solana/codecs-core': 5.1.0(typescript@5.9.3)
+      '@solana/codecs-numbers': 5.1.0(typescript@5.9.3)
+      '@solana/errors': 5.1.0(typescript@5.9.3)
       typescript: 5.9.3
+    optionalDependencies:
+      fastestsmallesttextencoderdecoder: 1.0.22
 
   '@solana/codecs@2.0.0-rc.1(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
     dependencies:
@@ -1848,10 +1848,10 @@ snapshots:
       commander: 14.0.2
       typescript: 5.9.3
 
-  '@solana/errors@5.0.0(typescript@5.9.3)':
+  '@solana/errors@5.1.0(typescript@5.9.3)':
     dependencies:
       chalk: 5.6.2
-      commander: 14.0.1
+      commander: 14.0.2
       typescript: 5.9.3
 
   '@solana/options@2.0.0-rc.1(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
@@ -2209,8 +2209,6 @@ snapshots:
 
   commander@13.0.0: {}
 
-  commander@14.0.1: {}
-
   commander@14.0.2: {}
 
   commander@2.20.3: {}