diff --git a/clients/js-legacy/package.json b/clients/js-legacy/package.json
index 0ab8f81c..664f9b22 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": "4.0.0",
+        "@solana/codecs-strings": "5.0.0",
         "@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 36a4fd58..6377344a 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: 4.0.0
-        version: 4.0.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)
+        specifier: 5.0.0
+        version: 5.0.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)
       '@solana/prettier-config-solana':
         specifier: 0.0.5
         version: 0.0.5(prettier@3.6.2)
@@ -230,8 +230,8 @@ packages:
     peerDependencies:
       typescript: '>=5.3.3'
 
-  '@solana/codecs-core@4.0.0':
-    resolution: {integrity: sha512-28kNUsyIlhU3MO3/7ZLDqeJf2YAm32B4tnTjl5A9HrbBqsTZ+upT/RzxZGP1MMm7jnPuIKCMwmTpsyqyR6IUpw==}
+  '@solana/codecs-core@5.0.0':
+    resolution: {integrity: sha512-rCG2d8OaamVF2/J//YyCgDqNJpUytVVltw9C8mJtEz5c6Se/LR6BFuG8g4xeJswq/ab4RFk5/HFdgbvNjKgQjA==}
     engines: {node: '>=20.18.0'}
     peerDependencies:
       typescript: '>=5.3.3'
@@ -252,8 +252,8 @@ packages:
     peerDependencies:
       typescript: '>=5.3.3'
 
-  '@solana/codecs-numbers@4.0.0':
-    resolution: {integrity: sha512-z9zpjtcwzqT9rbkKVZpkWB5/0V7+6YRKs6BccHkGJlaDx8Pe/+XOvPi2rEdXPqrPd9QWb5Xp1iBfcgaDMyiOiA==}
+  '@solana/codecs-numbers@5.0.0':
+    resolution: {integrity: sha512-a2+skRLuUK02f/XFe4L0e1+wHCyfK25PkyseFps1v1l4pvevukFwth/EhSyrs6w5CsTJRVoR7MuE3E00PM4egw==}
     engines: {node: '>=20.18.0'}
     peerDependencies:
       typescript: '>=5.3.3'
@@ -264,8 +264,8 @@ packages:
       fastestsmallesttextencoderdecoder: ^1.0.22
       typescript: '>=5'
 
-  '@solana/codecs-strings@4.0.0':
-    resolution: {integrity: sha512-XvyD+sQ1zyA0amfxbpoFZsucLoe+yASQtDiLUGMDg5TZ82IHE3B7n82jE8d8cTAqi0HgqQiwU13snPhvg1O0Ow==}
+  '@solana/codecs-strings@5.0.0':
+    resolution: {integrity: sha512-ALkRwpV8bGR6qjAYw0YXZwp2YI4wzvKOJGmx04Ut8gMdbaUx7qOcJkhEQKI6ZVC3lAWSIS1N1wGccUZDwvfKxw==}
     engines: {node: '>=20.18.0'}
     peerDependencies:
       fastestsmallesttextencoderdecoder: ^1.0.22
@@ -289,8 +289,8 @@ packages:
     peerDependencies:
       typescript: '>=5.3.3'
 
-  '@solana/errors@4.0.0':
-    resolution: {integrity: sha512-3YEtvcMvtcnTl4HahqLt0VnaGVf7vVWOnt6/uPky5e0qV6BlxDSbGkbBzttNjxLXHognV0AQi3pjvrtfUnZmbg==}
+  '@solana/errors@5.0.0':
+    resolution: {integrity: sha512-gTuhzO6E+ydfAAzqmqdPcvFyJwAzFKKIrqtnZPpgAuomcPYu+HSo0tuwSM/cTX0djmHt+GoOsf/julph+nvs2w==}
     engines: {node: '>=20.18.0'}
     hasBin: true
     peerDependencies:
@@ -638,6 +638,10 @@ packages:
     resolution: {integrity: sha512-2JkV3gUZUVrbNA+1sjBOYLsMZ5cEEl8GTFP2a4AVz5hvasAMCQ1D2l2le/cX+pV4N6ZU17zjUahLpIXRrnWL8A==}
     engines: {node: '>=20'}
 
+  commander@14.0.2:
+    resolution: {integrity: sha512-TywoWNNRbhoD0BXs1P3ZEScW8W5iKrnbithIl0YH+uCmBd0QpPOA8yc82DS3BIE5Ma6FnBVUsJ7wVUDz4dvOWQ==}
+    engines: {node: '>=20'}
+
   commander@2.20.3:
     resolution: {integrity: sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==}
 
@@ -1784,9 +1788,9 @@ snapshots:
       '@solana/errors': 2.3.0(typescript@5.9.3)
       typescript: 5.9.3
 
-  '@solana/codecs-core@4.0.0(typescript@5.9.3)':
+  '@solana/codecs-core@5.0.0(typescript@5.9.3)':
     dependencies:
-      '@solana/errors': 4.0.0(typescript@5.9.3)
+      '@solana/errors': 5.0.0(typescript@5.9.3)
       typescript: 5.9.3
 
   '@solana/codecs-data-structures@2.0.0-rc.1(typescript@5.9.3)':
@@ -1808,10 +1812,10 @@ snapshots:
       '@solana/errors': 2.3.0(typescript@5.9.3)
       typescript: 5.9.3
 
-  '@solana/codecs-numbers@4.0.0(typescript@5.9.3)':
+  '@solana/codecs-numbers@5.0.0(typescript@5.9.3)':
     dependencies:
-      '@solana/codecs-core': 4.0.0(typescript@5.9.3)
-      '@solana/errors': 4.0.0(typescript@5.9.3)
+      '@solana/codecs-core': 5.0.0(typescript@5.9.3)
+      '@solana/errors': 5.0.0(typescript@5.9.3)
       typescript: 5.9.3
 
   '@solana/codecs-strings@2.0.0-rc.1(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
@@ -1822,11 +1826,11 @@ snapshots:
       fastestsmallesttextencoderdecoder: 1.0.22
       typescript: 5.9.3
 
-  '@solana/codecs-strings@4.0.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
+  '@solana/codecs-strings@5.0.0(fastestsmallesttextencoderdecoder@1.0.22)(typescript@5.9.3)':
     dependencies:
-      '@solana/codecs-core': 4.0.0(typescript@5.9.3)
-      '@solana/codecs-numbers': 4.0.0(typescript@5.9.3)
-      '@solana/errors': 4.0.0(typescript@5.9.3)
+      '@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
       typescript: 5.9.3
 
@@ -1850,10 +1854,10 @@ snapshots:
   '@solana/errors@2.3.0(typescript@5.9.3)':
     dependencies:
       chalk: 5.6.2
-      commander: 14.0.1
+      commander: 14.0.2
       typescript: 5.9.3
 
-  '@solana/errors@4.0.0(typescript@5.9.3)':
+  '@solana/errors@5.0.0(typescript@5.9.3)':
     dependencies:
       chalk: 5.6.2
       commander: 14.0.1
@@ -2256,6 +2260,8 @@ snapshots:
 
   commander@14.0.1: {}
 
+  commander@14.0.2: {}
+
   commander@2.20.3: {}
 
   commondir@1.0.1: {}